Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Sam sat on the ground and put his head in his hands. 'I wish I had never |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent. | |
14 | * | |
15 | * [p.363 of _The Lord of the Rings_, II/vii: "The Mirror of Galadriel"] | |
79072805 LW |
16 | */ |
17 | ||
ccfc67b7 JH |
18 | /* |
19 | =head1 Magical Functions | |
166f8a29 DM |
20 | |
21 | "Magic" is special data attached to SV structures in order to give them | |
22 | "magical" properties. When any Perl code tries to read from, or assign to, | |
23 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
24 | with that SV's magic. A get is called prior to reading an SV, in order to | |
ddfa107c | 25 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 DM |
26 | number of the last read filehandle into to the SV's IV slot), while |
27 | set is called after an SV has been written to, in order to allow it to make | |
ddfa107c | 28 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
29 | PL_rs global variable). |
30 | ||
31 | Magic is implemented as a linked list of MAGIC structures attached to the | |
32 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array | |
33 | of functions that implement the get(), set(), length() etc functions, | |
34 | plus space for some flags and pointers. For example, a tied variable has | |
35 | a MAGIC structure that contains a pointer to the object associated with the | |
36 | tie. | |
37 | ||
ccfc67b7 JH |
38 | */ |
39 | ||
79072805 | 40 | #include "EXTERN.h" |
864dbfa3 | 41 | #define PERL_IN_MG_C |
79072805 LW |
42 | #include "perl.h" |
43 | ||
5cd24f17 | 44 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 JH |
45 | # ifdef I_GRP |
46 | # include <grp.h> | |
47 | # endif | |
188ea221 CS |
48 | #endif |
49 | ||
757f63d8 SP |
50 | #if defined(HAS_SETGROUPS) |
51 | # ifndef NGROUPS | |
52 | # define NGROUPS 32 | |
53 | # endif | |
54 | #endif | |
55 | ||
17aa7f3d JH |
56 | #ifdef __hpux |
57 | # include <sys/pstat.h> | |
58 | #endif | |
59 | ||
8aad04aa | 60 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 61 | Signal_t Perl_csighandler(int sig, siginfo_t *, void *); |
8aad04aa | 62 | #else |
e69880a5 | 63 | Signal_t Perl_csighandler(int sig); |
8aad04aa | 64 | #endif |
e69880a5 | 65 | |
9cffb111 OS |
66 | #ifdef __Lynx__ |
67 | /* Missing protos on LynxOS */ | |
68 | void setruid(uid_t id); | |
69 | void seteuid(uid_t id); | |
70 | void setrgid(uid_t id); | |
71 | void setegid(uid_t id); | |
72 | #endif | |
73 | ||
c07a80fd | 74 | /* |
75 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
76 | */ | |
77 | ||
78 | struct magic_state { | |
79 | SV* mgs_sv; | |
455ece5e | 80 | I32 mgs_ss_ix; |
f9c6fee5 CS |
81 | U32 mgs_magical; |
82 | bool mgs_readonly; | |
c07a80fd | 83 | }; |
455ece5e | 84 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
85 | |
86 | STATIC void | |
8fb26106 | 87 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 88 | { |
97aff369 | 89 | dVAR; |
455ece5e | 90 | MGS* mgs; |
7918f24d NC |
91 | |
92 | PERL_ARGS_ASSERT_SAVE_MAGIC; | |
93 | ||
c07a80fd | 94 | assert(SvMAGICAL(sv)); |
d8b2590f NC |
95 | /* Turning READONLY off for a copy-on-write scalar (including shared |
96 | hash keys) is a bad idea. */ | |
765f542d | 97 | if (SvIsCOW(sv)) |
9a265e59 | 98 | sv_force_normal_flags(sv, 0); |
c07a80fd | 99 | |
8772537c | 100 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
101 | |
102 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 103 | mgs->mgs_sv = sv; |
f9c6fee5 CS |
104 | mgs->mgs_magical = SvMAGICAL(sv); |
105 | mgs->mgs_readonly = SvREADONLY(sv) != 0; | |
455ece5e | 106 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 107 | |
108 | SvMAGICAL_off(sv); | |
109 | SvREADONLY_off(sv); | |
085bde85 NC |
110 | if (!(SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK))) { |
111 | /* No public flags are set, so promote any private flags to public. */ | |
112 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
113 | } | |
c07a80fd | 114 | } |
115 | ||
954c1994 GS |
116 | /* |
117 | =for apidoc mg_magical | |
118 | ||
119 | Turns on the magical status of an SV. See C<sv_magic>. | |
120 | ||
121 | =cut | |
122 | */ | |
123 | ||
8990e307 | 124 | void |
864dbfa3 | 125 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 126 | { |
e1ec3a88 | 127 | const MAGIC* mg; |
7918f24d | 128 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 129 | PERL_UNUSED_CONTEXT; |
f9c6fee5 CS |
130 | |
131 | SvMAGICAL_off(sv); | |
218787bd | 132 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
133 | do { |
134 | const MGVTBL* const vtbl = mg->mg_virtual; | |
135 | if (vtbl) { | |
136 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
137 | SvGMAGICAL_on(sv); | |
138 | if (vtbl->svt_set) | |
139 | SvSMAGICAL_on(sv); | |
140 | if (vtbl->svt_clear) | |
141 | SvRMAGICAL_on(sv); | |
142 | } | |
143 | } while ((mg = mg->mg_moremagic)); | |
144 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
145 | SvRMAGICAL_on(sv); | |
8990e307 LW |
146 | } |
147 | } | |
148 | ||
2767dea0 DM |
149 | |
150 | /* is this container magic (%ENV, $1 etc), or value magic (pos, taint etc)? */ | |
151 | ||
152 | STATIC bool | |
153 | S_is_container_magic(const MAGIC *mg) | |
154 | { | |
7918f24d | 155 | assert(mg); |
2767dea0 DM |
156 | switch (mg->mg_type) { |
157 | case PERL_MAGIC_bm: | |
158 | case PERL_MAGIC_fm: | |
159 | case PERL_MAGIC_regex_global: | |
160 | case PERL_MAGIC_nkeys: | |
161 | #ifdef USE_LOCALE_COLLATE | |
162 | case PERL_MAGIC_collxfrm: | |
163 | #endif | |
164 | case PERL_MAGIC_qr: | |
165 | case PERL_MAGIC_taint: | |
166 | case PERL_MAGIC_vec: | |
167 | case PERL_MAGIC_vstring: | |
168 | case PERL_MAGIC_utf8: | |
169 | case PERL_MAGIC_substr: | |
170 | case PERL_MAGIC_defelem: | |
171 | case PERL_MAGIC_arylen: | |
172 | case PERL_MAGIC_pos: | |
173 | case PERL_MAGIC_backref: | |
174 | case PERL_MAGIC_arylen_p: | |
175 | case PERL_MAGIC_rhash: | |
176 | case PERL_MAGIC_symtab: | |
177 | return 0; | |
178 | default: | |
179 | return 1; | |
180 | } | |
181 | } | |
182 | ||
954c1994 GS |
183 | /* |
184 | =for apidoc mg_get | |
185 | ||
186 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
187 | ||
188 | =cut | |
189 | */ | |
190 | ||
79072805 | 191 | int |
864dbfa3 | 192 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 193 | { |
97aff369 | 194 | dVAR; |
35a4481c | 195 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
fe2774ed | 196 | const bool was_temp = (bool)SvTEMP(sv); |
f9c6fee5 | 197 | bool have_new = 0; |
ff76feab | 198 | MAGIC *newmg, *head, *cur, *mg; |
20135930 | 199 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
200 | reference. */ |
201 | ||
7918f24d NC |
202 | PERL_ARGS_ASSERT_MG_GET; |
203 | ||
6683b158 NC |
204 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can |
205 | cause the SV's buffer to get stolen (and maybe other stuff). | |
206 | So restore it. | |
207 | */ | |
46da273f | 208 | sv_2mortal(SvREFCNT_inc_simple_NN(sv)); |
6683b158 NC |
209 | if (!was_temp) { |
210 | SvTEMP_off(sv); | |
211 | } | |
212 | ||
455ece5e | 213 | save_magic(mgs_ix, sv); |
463ee0b2 | 214 | |
ff76feab AMS |
215 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
216 | list of magic. svt_get() may delete the current entry, add new | |
217 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
218 | ||
219 | newmg = cur = head = mg = SvMAGIC(sv); | |
220 | while (mg) { | |
35a4481c | 221 | const MGVTBL * const vtbl = mg->mg_virtual; |
f9c6fee5 | 222 | MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */ |
ff76feab | 223 | |
2b260de0 | 224 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 225 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 226 | |
58f82c5c DM |
227 | /* guard against magic having been deleted - eg FETCH calling |
228 | * untie */ | |
f9c6fee5 CS |
229 | if (!SvMAGIC(sv)) { |
230 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ | |
58f82c5c | 231 | break; |
f9c6fee5 | 232 | } |
b77f7d40 | 233 | |
f9c6fee5 | 234 | /* recalculate flags if this entry was deleted. */ |
ff76feab | 235 | if (mg->mg_flags & MGf_GSKIP) |
f9c6fee5 | 236 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; |
a0d0e21e | 237 | } |
ff76feab | 238 | |
f9c6fee5 | 239 | mg = nextmg; |
ff76feab | 240 | |
0723351e | 241 | if (have_new) { |
ff76feab AMS |
242 | /* Have we finished with the new entries we saw? Start again |
243 | where we left off (unless there are more new entries). */ | |
244 | if (mg == head) { | |
0723351e | 245 | have_new = 0; |
ff76feab AMS |
246 | mg = cur; |
247 | head = newmg; | |
248 | } | |
249 | } | |
250 | ||
251 | /* Were any new entries added? */ | |
0723351e NC |
252 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
253 | have_new = 1; | |
ff76feab AMS |
254 | cur = mg; |
255 | mg = newmg; | |
f9c6fee5 | 256 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 257 | } |
79072805 | 258 | } |
463ee0b2 | 259 | |
8772537c | 260 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
261 | |
262 | if (SvREFCNT(sv) == 1) { | |
263 | /* We hold the last reference to this SV, which implies that the | |
264 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 265 | SvOK_off(sv); |
6683b158 | 266 | } |
79072805 LW |
267 | return 0; |
268 | } | |
269 | ||
954c1994 GS |
270 | /* |
271 | =for apidoc mg_set | |
272 | ||
273 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
274 | ||
275 | =cut | |
276 | */ | |
277 | ||
79072805 | 278 | int |
864dbfa3 | 279 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 280 | { |
97aff369 | 281 | dVAR; |
35a4481c | 282 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 283 | MAGIC* mg; |
463ee0b2 LW |
284 | MAGIC* nextmg; |
285 | ||
7918f24d NC |
286 | PERL_ARGS_ASSERT_MG_SET; |
287 | ||
455ece5e | 288 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
289 | |
290 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 291 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 292 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
293 | if (mg->mg_flags & MGf_GSKIP) { |
294 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 295 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 296 | } |
e7cbf6c6 DM |
297 | if (PL_localizing == 2 && !S_is_container_magic(mg)) |
298 | continue; | |
2b260de0 | 299 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 300 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 301 | } |
463ee0b2 | 302 | |
8772537c | 303 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
304 | return 0; |
305 | } | |
306 | ||
954c1994 GS |
307 | /* |
308 | =for apidoc mg_length | |
309 | ||
310 | Report on the SV's length. See C<sv_magic>. | |
311 | ||
312 | =cut | |
313 | */ | |
314 | ||
79072805 | 315 | U32 |
864dbfa3 | 316 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 317 | { |
97aff369 | 318 | dVAR; |
79072805 | 319 | MAGIC* mg; |
463ee0b2 | 320 | STRLEN len; |
463ee0b2 | 321 | |
7918f24d NC |
322 | PERL_ARGS_ASSERT_MG_LENGTH; |
323 | ||
79072805 | 324 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 325 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 326 | if (vtbl && vtbl->svt_len) { |
35a4481c | 327 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 328 | save_magic(mgs_ix, sv); |
a0d0e21e | 329 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 330 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 331 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
332 | return len; |
333 | } | |
334 | } | |
335 | ||
d0644529 NC |
336 | { |
337 | /* You can't know whether it's UTF-8 until you get the string again... | |
338 | */ | |
10516c54 | 339 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
340 | |
341 | if (DO_UTF8(sv)) { | |
342 | len = utf8_length(s, s + len); | |
343 | } | |
5636d518 | 344 | } |
463ee0b2 | 345 | return len; |
79072805 LW |
346 | } |
347 | ||
8fb26106 | 348 | I32 |
864dbfa3 | 349 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
350 | { |
351 | MAGIC* mg; | |
ac27b0f5 | 352 | |
7918f24d NC |
353 | PERL_ARGS_ASSERT_MG_SIZE; |
354 | ||
93965878 | 355 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 356 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 357 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
358 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
359 | I32 len; | |
455ece5e | 360 | save_magic(mgs_ix, sv); |
93965878 | 361 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 362 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 363 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
364 | return len; |
365 | } | |
366 | } | |
367 | ||
368 | switch(SvTYPE(sv)) { | |
369 | case SVt_PVAV: | |
502c6561 | 370 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
371 | case SVt_PVHV: |
372 | /* FIXME */ | |
373 | default: | |
cea2e8a9 | 374 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
375 | break; |
376 | } | |
377 | return 0; | |
378 | } | |
379 | ||
954c1994 GS |
380 | /* |
381 | =for apidoc mg_clear | |
382 | ||
383 | Clear something magical that the SV represents. See C<sv_magic>. | |
384 | ||
385 | =cut | |
386 | */ | |
387 | ||
79072805 | 388 | int |
864dbfa3 | 389 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 390 | { |
35a4481c | 391 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 392 | MAGIC* mg; |
8ac77ac9 | 393 | MAGIC *nextmg; |
463ee0b2 | 394 | |
7918f24d NC |
395 | PERL_ARGS_ASSERT_MG_CLEAR; |
396 | ||
455ece5e | 397 | save_magic(mgs_ix, sv); |
463ee0b2 | 398 | |
8ac77ac9 | 399 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 400 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 401 | /* omit GSKIP -- never set here */ |
727405f8 | 402 | |
8ac77ac9 NC |
403 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
404 | ||
2b260de0 | 405 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 406 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 407 | } |
463ee0b2 | 408 | |
8772537c | 409 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
410 | return 0; |
411 | } | |
412 | ||
954c1994 GS |
413 | /* |
414 | =for apidoc mg_find | |
415 | ||
416 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
417 | ||
418 | =cut | |
419 | */ | |
420 | ||
93a17b20 | 421 | MAGIC* |
35a4481c | 422 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 423 | { |
96a5add6 | 424 | PERL_UNUSED_CONTEXT; |
35a4481c AL |
425 | if (sv) { |
426 | MAGIC *mg; | |
427 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
428 | if (mg->mg_type == type) | |
429 | return mg; | |
430 | } | |
93a17b20 | 431 | } |
5f66b61c | 432 | return NULL; |
93a17b20 LW |
433 | } |
434 | ||
954c1994 GS |
435 | /* |
436 | =for apidoc mg_copy | |
437 | ||
438 | Copies the magic from one SV to another. See C<sv_magic>. | |
439 | ||
440 | =cut | |
441 | */ | |
442 | ||
79072805 | 443 | int |
864dbfa3 | 444 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 445 | { |
463ee0b2 | 446 | int count = 0; |
79072805 | 447 | MAGIC* mg; |
7918f24d NC |
448 | |
449 | PERL_ARGS_ASSERT_MG_COPY; | |
450 | ||
463ee0b2 | 451 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 452 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
453 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
454 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
455 | } | |
823a54a3 AL |
456 | else { |
457 | const char type = mg->mg_type; | |
1e73acc8 | 458 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
459 | sv_magic(nsv, |
460 | (type == PERL_MAGIC_tied) | |
461 | ? SvTIED_obj(sv, mg) | |
462 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
463 | ? sv | |
464 | : mg->mg_obj, | |
465 | toLOWER(type), key, klen); | |
466 | count++; | |
467 | } | |
79072805 | 468 | } |
79072805 | 469 | } |
463ee0b2 | 470 | return count; |
79072805 LW |
471 | } |
472 | ||
954c1994 | 473 | /* |
0cbee0a4 DM |
474 | =for apidoc mg_localize |
475 | ||
9711599e CS |
476 | Copy some of the magic from an existing SV to new localized version of that |
477 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
478 | taint, pos). | |
479 | ||
af7df257 | 480 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
481 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
482 | and that will handle the magic. | |
0cbee0a4 DM |
483 | |
484 | =cut | |
485 | */ | |
486 | ||
487 | void | |
af7df257 | 488 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 489 | { |
97aff369 | 490 | dVAR; |
0cbee0a4 | 491 | MAGIC *mg; |
7918f24d NC |
492 | |
493 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
494 | ||
0cbee0a4 | 495 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 496 | const MGVTBL* const vtbl = mg->mg_virtual; |
2767dea0 | 497 | if (!S_is_container_magic(mg)) |
0cbee0a4 | 498 | continue; |
0cbee0a4 | 499 | |
a5063e7c DM |
500 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
501 | (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg); | |
502 | else | |
0cbee0a4 DM |
503 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
504 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 505 | |
0cbee0a4 DM |
506 | /* container types should remain read-only across localization */ |
507 | SvFLAGS(nsv) |= SvREADONLY(sv); | |
508 | } | |
509 | ||
510 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
511 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 512 | if (setmagic) { |
9711599e CS |
513 | PL_localizing = 1; |
514 | SvSETMAGIC(nsv); | |
515 | PL_localizing = 0; | |
516 | } | |
0cbee0a4 DM |
517 | } |
518 | } | |
519 | ||
520 | /* | |
954c1994 GS |
521 | =for apidoc mg_free |
522 | ||
523 | Free any magic storage used by the SV. See C<sv_magic>. | |
524 | ||
525 | =cut | |
526 | */ | |
527 | ||
79072805 | 528 | int |
864dbfa3 | 529 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
530 | { |
531 | MAGIC* mg; | |
532 | MAGIC* moremagic; | |
7918f24d NC |
533 | |
534 | PERL_ARGS_ASSERT_MG_FREE; | |
535 | ||
79072805 | 536 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
35a4481c | 537 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 538 | moremagic = mg->mg_moremagic; |
2b260de0 | 539 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 540 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 541 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 542 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 543 | Safefree(mg->mg_ptr); |
565764a8 | 544 | else if (mg->mg_len == HEf_SVKEY) |
ad64d0ec | 545 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); |
d460ef45 | 546 | } |
b881518d JH |
547 | if (mg->mg_flags & MGf_REFCOUNTED) |
548 | SvREFCNT_dec(mg->mg_obj); | |
79072805 | 549 | Safefree(mg); |
c826f41b | 550 | SvMAGIC_set(sv, moremagic); |
79072805 | 551 | } |
b162af07 | 552 | SvMAGIC_set(sv, NULL); |
68f8932e | 553 | SvMAGICAL_off(sv); |
79072805 LW |
554 | return 0; |
555 | } | |
556 | ||
79072805 | 557 | #include <signal.h> |
79072805 | 558 | |
942e002e | 559 | U32 |
864dbfa3 | 560 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 561 | { |
97aff369 | 562 | dVAR; |
8772537c | 563 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 564 | |
7918f24d NC |
565 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
566 | ||
0bd48802 AL |
567 | if (PL_curpm) { |
568 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
569 | if (rx) { | |
a678b0e4 YO |
570 | if (mg->mg_obj) { /* @+ */ |
571 | /* return the number possible */ | |
07bc277f | 572 | return RX_NPARENS(rx); |
a678b0e4 | 573 | } else { /* @- */ |
07bc277f | 574 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
575 | |
576 | /* return the last filled */ | |
f46c4081 | 577 | while ( paren >= 0 |
07bc277f NC |
578 | && (RX_OFFS(rx)[paren].start == -1 |
579 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 580 | paren--; |
a678b0e4 YO |
581 | return (U32)paren; |
582 | } | |
0bd48802 | 583 | } |
8f580fb8 | 584 | } |
ac27b0f5 | 585 | |
942e002e | 586 | return (U32)-1; |
6cef1e77 IZ |
587 | } |
588 | ||
589 | int | |
864dbfa3 | 590 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 591 | { |
97aff369 | 592 | dVAR; |
7918f24d NC |
593 | |
594 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
595 | ||
0bd48802 AL |
596 | if (PL_curpm) { |
597 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
598 | if (rx) { | |
599 | register const I32 paren = mg->mg_len; | |
600 | register I32 s; | |
601 | register I32 t; | |
602 | if (paren < 0) | |
603 | return 0; | |
07bc277f NC |
604 | if (paren <= (I32)RX_NPARENS(rx) && |
605 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
606 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 AL |
607 | { |
608 | register I32 i; | |
609 | if (mg->mg_obj) /* @+ */ | |
610 | i = t; | |
611 | else /* @- */ | |
612 | i = s; | |
613 | ||
614 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 615 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 616 | if (b) |
f5a63d97 | 617 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 618 | } |
727405f8 | 619 | |
0bd48802 | 620 | sv_setiv(sv, i); |
1aa99e6b | 621 | } |
0bd48802 | 622 | } |
6cef1e77 IZ |
623 | } |
624 | return 0; | |
625 | } | |
626 | ||
e4b89193 | 627 | int |
a29d06ed MG |
628 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
629 | { | |
7918f24d | 630 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
631 | PERL_UNUSED_ARG(sv); |
632 | PERL_UNUSED_ARG(mg); | |
f1f66076 | 633 | Perl_croak(aTHX_ "%s", PL_no_modify); |
0dbb1585 | 634 | NORETURN_FUNCTION_END; |
a29d06ed MG |
635 | } |
636 | ||
93a17b20 | 637 | U32 |
864dbfa3 | 638 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 639 | { |
97aff369 | 640 | dVAR; |
93a17b20 | 641 | register I32 paren; |
93a17b20 | 642 | register I32 i; |
2fdbfb4d AB |
643 | register const REGEXP * rx; |
644 | const char * const remaining = mg->mg_ptr + 1; | |
93a17b20 | 645 | |
7918f24d NC |
646 | PERL_ARGS_ASSERT_MAGIC_LEN; |
647 | ||
93a17b20 | 648 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
649 | case '\020': |
650 | if (*remaining == '\0') { /* ^P */ | |
651 | break; | |
652 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
653 | goto do_prematch; | |
654 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
655 | goto do_postmatch; | |
656 | } | |
657 | break; | |
658 | case '\015': /* $^MATCH */ | |
659 | if (strEQ(remaining, "ATCH")) { | |
660 | goto do_match; | |
661 | } else { | |
662 | break; | |
663 | } | |
664 | case '`': | |
665 | do_prematch: | |
f1b875a0 | 666 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
667 | goto maybegetparen; |
668 | case '\'': | |
669 | do_postmatch: | |
f1b875a0 | 670 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
671 | goto maybegetparen; |
672 | case '&': | |
673 | do_match: | |
f1b875a0 | 674 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 675 | goto maybegetparen; |
93a17b20 | 676 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
677 | case '5': case '6': case '7': case '8': case '9': |
678 | paren = atoi(mg->mg_ptr); | |
679 | maybegetparen: | |
aaa362c4 | 680 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
681 | getparen: |
682 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 683 | |
ffc61ed2 | 684 | if (i < 0) |
0844c848 | 685 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 686 | return i; |
2fdbfb4d | 687 | } else { |
235bddc8 | 688 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 689 | report_uninit(sv); |
2fdbfb4d | 690 | return 0; |
93a17b20 | 691 | } |
93a17b20 | 692 | case '+': |
aaa362c4 | 693 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 694 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
695 | if (paren) |
696 | goto getparen; | |
93a17b20 | 697 | } |
748a9306 | 698 | return 0; |
a01268b5 JH |
699 | case '\016': /* ^N */ |
700 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 701 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
702 | if (paren) |
703 | goto getparen; | |
704 | } | |
705 | return 0; | |
93a17b20 LW |
706 | } |
707 | magic_get(sv,mg); | |
2d8e6c8d | 708 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 709 | sv_2pv(sv, 0); |
2d8e6c8d | 710 | } |
93a17b20 LW |
711 | if (SvPOK(sv)) |
712 | return SvCUR(sv); | |
713 | return 0; | |
714 | } | |
715 | ||
ad3296c6 | 716 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
717 | if (SvPOK(sv)) { \ |
718 | STRLEN len = SvCUR(sv); \ | |
719 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
720 | while (len > 0 && isSPACE(p[len-1])) \ |
721 | --len; \ | |
722 | SvCUR_set(sv, len); \ | |
723 | p[len] = '\0'; \ | |
724 | } \ | |
ad3296c6 SH |
725 | } STMT_END |
726 | ||
8b850bd5 NC |
727 | void |
728 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
729 | { | |
7918f24d NC |
730 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
731 | ||
8b850bd5 NC |
732 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
733 | sv_setsv(sv, &PL_sv_undef); | |
734 | else { | |
735 | sv_setpvs(sv, ""); | |
736 | SvUTF8_off(sv); | |
737 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
738 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
739 | c->cop_hints_hash, | |
740 | 0, "open<", 5, 0, 0); | |
741 | assert(value); | |
742 | sv_catsv(sv, value); | |
743 | } | |
744 | sv_catpvs(sv, "\0"); | |
745 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
746 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
747 | c->cop_hints_hash, | |
748 | 0, "open>", 5, 0, 0); | |
749 | assert(value); | |
750 | sv_catsv(sv, value); | |
751 | } | |
752 | } | |
753 | } | |
754 | ||
79072805 | 755 | int |
864dbfa3 | 756 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 757 | { |
27da23d5 | 758 | dVAR; |
79072805 | 759 | register I32 paren; |
35272f84 | 760 | register char *s = NULL; |
d9f97599 | 761 | register REGEXP *rx; |
823a54a3 AL |
762 | const char * const remaining = mg->mg_ptr + 1; |
763 | const char nextchar = *remaining; | |
79072805 | 764 | |
7918f24d NC |
765 | PERL_ARGS_ASSERT_MAGIC_GET; |
766 | ||
79072805 | 767 | switch (*mg->mg_ptr) { |
748a9306 | 768 | case '\001': /* ^A */ |
3280af22 | 769 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 770 | break; |
e5218da5 | 771 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 772 | if (nextchar == '\0') { |
e5218da5 GA |
773 | sv_setiv(sv, (IV)PL_minus_c); |
774 | } | |
823a54a3 | 775 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
776 | sv_setiv(sv, (IV)STATUS_NATIVE); |
777 | } | |
49460fe6 NIS |
778 | break; |
779 | ||
79072805 | 780 | case '\004': /* ^D */ |
aea4f609 | 781 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 782 | break; |
28f23441 | 783 | case '\005': /* ^E */ |
823a54a3 | 784 | if (nextchar == '\0') { |
e37778c2 | 785 | #if defined(VMS) |
0a378802 JH |
786 | { |
787 | # include <descrip.h> | |
788 | # include <starlet.h> | |
789 | char msg[255]; | |
790 | $DESCRIPTOR(msgdsc,msg); | |
791 | sv_setnv(sv,(NV) vaxc$errno); | |
792 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
793 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
794 | else | |
76f68e9b | 795 | sv_setpvs(sv,""); |
0a378802 | 796 | } |
4b645107 | 797 | #elif defined(OS2) |
0a378802 JH |
798 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
799 | sv_setnv(sv, (NV)errno); | |
800 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
801 | } else { | |
802 | if (errno != errno_isOS2) { | |
823a54a3 | 803 | const int tmp = _syserrno(); |
0a378802 JH |
804 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
805 | Perl_rc = tmp; | |
806 | } | |
807 | sv_setnv(sv, (NV)Perl_rc); | |
808 | sv_setpv(sv, os2error(Perl_rc)); | |
809 | } | |
4b645107 | 810 | #elif defined(WIN32) |
0a378802 | 811 | { |
d4c19fe8 | 812 | const DWORD dwErr = GetLastError(); |
0a378802 | 813 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 814 | if (dwErr) { |
0a378802 JH |
815 | PerlProc_GetOSError(sv, dwErr); |
816 | } | |
817 | else | |
76f68e9b | 818 | sv_setpvs(sv, ""); |
0a378802 JH |
819 | SetLastError(dwErr); |
820 | } | |
22fae026 | 821 | #else |
f6c8f21d | 822 | { |
4ee39169 | 823 | dSAVE_ERRNO; |
f6c8f21d | 824 | sv_setnv(sv, (NV)errno); |
666ea192 | 825 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 826 | RESTORE_ERRNO; |
f6c8f21d | 827 | } |
28f23441 | 828 | #endif |
ad3296c6 | 829 | SvRTRIM(sv); |
0a378802 JH |
830 | SvNOK_on(sv); /* what a wonderful hack! */ |
831 | } | |
823a54a3 | 832 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
833 | sv_setsv(sv, PL_encoding); |
834 | break; | |
79072805 | 835 | case '\006': /* ^F */ |
3280af22 | 836 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 837 | break; |
a0d0e21e | 838 | case '\010': /* ^H */ |
3280af22 | 839 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 840 | break; |
9d116dd7 | 841 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 842 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 843 | break; |
ac27b0f5 | 844 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 845 | if (nextchar == '\0') { |
ac27b0f5 | 846 | sv_setpv(sv, PL_osname); |
3511154c DM |
847 | SvTAINTED_off(sv); |
848 | } | |
823a54a3 | 849 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 850 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 851 | } |
28f23441 | 852 | break; |
cde0cee5 YO |
853 | case '\020': |
854 | if (nextchar == '\0') { /* ^P */ | |
855 | sv_setiv(sv, (IV)PL_perldb); | |
856 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
857 | goto do_prematch_fetch; | |
858 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
859 | goto do_postmatch_fetch; | |
860 | } | |
79072805 | 861 | break; |
fb73857a | 862 | case '\023': /* ^S */ |
823a54a3 | 863 | if (nextchar == '\0') { |
bc177e6b | 864 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 865 | SvOK_off(sv); |
3280af22 | 866 | else if (PL_in_eval) |
6dc8a9e4 | 867 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
868 | else |
869 | sv_setiv(sv, 0); | |
d58bf5aa | 870 | } |
fb73857a | 871 | break; |
79072805 | 872 | case '\024': /* ^T */ |
823a54a3 | 873 | if (nextchar == '\0') { |
88e89b8a | 874 | #ifdef BIG_TIME |
7c36658b | 875 | sv_setnv(sv, PL_basetime); |
88e89b8a | 876 | #else |
7c36658b | 877 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 878 | #endif |
7c36658b | 879 | } |
823a54a3 | 880 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
881 | sv_setiv(sv, PL_tainting |
882 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
883 | : 0); | |
7c36658b | 884 | break; |
e07ea26a | 885 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 886 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 887 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 888 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 889 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
890 | else if (strEQ(remaining, "TF8CACHE")) |
891 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
892 | break; |
893 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 894 | if (nextchar == '\0') |
4438c4b7 | 895 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 896 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 897 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 898 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
899 | } |
900 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
901 | sv_setpvn( |
902 | sv, | |
903 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
904 | WARNsize | |
905 | ); | |
013b78e8 | 906 | } |
d3a7d8c7 | 907 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
908 | /* Get the bit mask for $warnings::Bits{all}, because |
909 | * it could have been extended by warnings::register */ | |
6673a63c | 910 | HV * const bits=get_hv("warnings::Bits", 0); |
f5a63d97 AL |
911 | if (bits) { |
912 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
913 | if (bits_all) | |
914 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
915 | } |
916 | else { | |
917 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
918 | } | |
ac27b0f5 | 919 | } |
4438c4b7 | 920 | else { |
72dc9ed5 NC |
921 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
922 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 923 | } |
d3a7d8c7 | 924 | SvPOK_only(sv); |
4438c4b7 | 925 | } |
79072805 | 926 | break; |
cde0cee5 YO |
927 | case '\015': /* $^MATCH */ |
928 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
929 | case '1': case '2': case '3': case '4': |
930 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
931 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
932 | /* | |
159b6efe | 933 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); |
cde0cee5 YO |
934 | * XXX Does the new way break anything? |
935 | */ | |
936 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 937 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
938 | break; |
939 | } | |
940 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
941 | } |
942 | break; | |
943 | case '+': | |
aaa362c4 | 944 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
945 | if (RX_LASTPAREN(rx)) { |
946 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
947 | break; |
948 | } | |
79072805 | 949 | } |
3280af22 | 950 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 951 | break; |
a01268b5 JH |
952 | case '\016': /* ^N */ |
953 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
954 | if (RX_LASTCLOSEPAREN(rx)) { |
955 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
956 | break; |
957 | } | |
958 | ||
a01268b5 JH |
959 | } |
960 | sv_setsv(sv,&PL_sv_undef); | |
961 | break; | |
79072805 | 962 | case '`': |
cde0cee5 | 963 | do_prematch_fetch: |
aaa362c4 | 964 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 965 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 966 | break; |
79072805 | 967 | } |
3280af22 | 968 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
969 | break; |
970 | case '\'': | |
cde0cee5 | 971 | do_postmatch_fetch: |
aaa362c4 | 972 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 973 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 974 | break; |
79072805 | 975 | } |
3280af22 | 976 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
977 | break; |
978 | case '.': | |
3280af22 | 979 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 980 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 981 | } |
79072805 LW |
982 | break; |
983 | case '?': | |
809a5acc | 984 | { |
809a5acc | 985 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 986 | #ifdef COMPLEX_STATUS |
41cb7b2b | 987 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
988 | LvTARGOFF(sv) = PL_statusvalue; |
989 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 990 | #endif |
809a5acc | 991 | } |
79072805 LW |
992 | break; |
993 | case '^': | |
099be4f1 DM |
994 | if (!isGV_with_GP(PL_defoutgv)) |
995 | s = ""; | |
996 | else if (GvIOp(PL_defoutgv)) | |
997 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
998 | if (s) |
999 | sv_setpv(sv,s); | |
1000 | else { | |
3280af22 | 1001 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1002 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1003 | } |
1004 | break; | |
1005 | case '~': | |
099be4f1 DM |
1006 | if (!isGV_with_GP(PL_defoutgv)) |
1007 | s = ""; | |
1008 | else if (GvIOp(PL_defoutgv)) | |
0daa599b | 1009 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1010 | if (!s) |
3280af22 | 1011 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1012 | sv_setpv(sv,s); |
1013 | break; | |
79072805 | 1014 | case '=': |
099be4f1 | 1015 | if (GvIO(PL_defoutgv)) |
0daa599b | 1016 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1017 | break; |
1018 | case '-': | |
099be4f1 | 1019 | if (GvIO(PL_defoutgv)) |
0daa599b | 1020 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1021 | break; |
1022 | case '%': | |
099be4f1 | 1023 | if (GvIO(PL_defoutgv)) |
0daa599b | 1024 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1025 | break; |
79072805 LW |
1026 | case ':': |
1027 | break; | |
1028 | case '/': | |
1029 | break; | |
1030 | case '[': | |
11206fdd | 1031 | sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop)); |
79072805 LW |
1032 | break; |
1033 | case '|': | |
099be4f1 | 1034 | if (GvIO(PL_defoutgv)) |
0daa599b | 1035 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1036 | break; |
79072805 | 1037 | case '\\': |
b2ce0fda | 1038 | if (PL_ors_sv) |
f28098ff | 1039 | sv_copypv(sv, PL_ors_sv); |
79072805 | 1040 | break; |
79072805 | 1041 | case '!': |
666d8aa2 CB |
1042 | { |
1043 | dSAVE_ERRNO; | |
a5f75d66 | 1044 | #ifdef VMS |
65202027 | 1045 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1046 | #else |
65202027 | 1047 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1048 | #endif |
88e89b8a | 1049 | #ifdef OS2 |
ed344e4f IZ |
1050 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1051 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1052 | else |
a5f75d66 | 1053 | #endif |
666ea192 | 1054 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
be1cf43c NC |
1055 | if (SvPOKp(sv)) |
1056 | SvPOK_on(sv); /* may have got removed during taint processing */ | |
4ee39169 | 1057 | RESTORE_ERRNO; |
88e89b8a | 1058 | } |
666d8aa2 | 1059 | |
ad3296c6 | 1060 | SvRTRIM(sv); |
946ec16e | 1061 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1062 | break; |
1063 | case '<': | |
3280af22 | 1064 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
1065 | break; |
1066 | case '>': | |
3280af22 | 1067 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
1068 | break; |
1069 | case '(': | |
3280af22 | 1070 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
1071 | goto add_groups; |
1072 | case ')': | |
3280af22 | 1073 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 1074 | add_groups: |
79072805 | 1075 | #ifdef HAS_GETGROUPS |
79072805 | 1076 | { |
57d7c65e | 1077 | Groups_t *gary = NULL; |
fb45abb2 | 1078 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1079 | Newx(gary, num_groups, Groups_t); |
1080 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1081 | for (i = 0; i < num_groups; i++) |
1082 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1083 | Safefree(gary); |
79072805 | 1084 | } |
155aba94 | 1085 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1086 | #endif |
79072805 | 1087 | break; |
79072805 LW |
1088 | case '0': |
1089 | break; | |
1090 | } | |
a0d0e21e | 1091 | return 0; |
79072805 LW |
1092 | } |
1093 | ||
1094 | int | |
864dbfa3 | 1095 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1096 | { |
8772537c | 1097 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1098 | |
7918f24d NC |
1099 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1100 | ||
79072805 | 1101 | if (uf && uf->uf_val) |
24f81a43 | 1102 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1103 | return 0; |
1104 | } | |
1105 | ||
1106 | int | |
864dbfa3 | 1107 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1108 | { |
27da23d5 | 1109 | dVAR; |
9ae3433d | 1110 | STRLEN len = 0, klen; |
666ea192 | 1111 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1112 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1113 | my_setenv(ptr, s); |
1e422769 | 1114 | |
7918f24d NC |
1115 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1116 | ||
a0d0e21e LW |
1117 | #ifdef DYNAMIC_ENV_FETCH |
1118 | /* We just undefd an environment var. Is a replacement */ | |
1119 | /* waiting in the wings? */ | |
1120 | if (!len) { | |
fabdb6c0 AL |
1121 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1122 | if (valp) | |
4ab59fcc | 1123 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1124 | } |
1125 | #endif | |
1e422769 | 1126 | |
39e571d4 | 1127 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1128 | /* And you'll never guess what the dog had */ |
1129 | /* in its mouth... */ | |
3280af22 | 1130 | if (PL_tainting) { |
1e422769 | 1131 | MgTAINTEDDIR_off(mg); |
1132 | #ifdef VMS | |
5aabfad6 | 1133 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1134 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 | 1135 | Stat_t sbuf; |
1e422769 | 1136 | int i = 0, j = 0; |
1137 | ||
6fca0082 | 1138 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1139 | elt = eltbuf; |
1e422769 | 1140 | do { /* DCL$PATH may be a search list */ |
1141 | while (1) { /* as may dev portion of any element */ | |
1142 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1143 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1144 | cando_by_name(S_IWUSR,0,elt) ) { | |
1145 | MgTAINTEDDIR_on(mg); | |
1146 | return 0; | |
1147 | } | |
1148 | } | |
bd61b366 | 1149 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1150 | *cp = '\0'; |
1151 | if (my_trnlnm(elt, eltbuf, j++)) | |
1152 | elt = eltbuf; | |
1153 | else | |
1154 | break; | |
1155 | } | |
1156 | j = 0; | |
1157 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1158 | } | |
1159 | #endif /* VMS */ | |
5aabfad6 | 1160 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1161 | const char * const strend = s + len; |
463ee0b2 LW |
1162 | |
1163 | while (s < strend) { | |
96827780 | 1164 | char tmpbuf[256]; |
c623ac67 | 1165 | Stat_t st; |
5f74f29c | 1166 | I32 i; |
f5a63d97 AL |
1167 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1168 | const char path_sep = '|'; | |
1169 | #else | |
1170 | const char path_sep = ':'; | |
1171 | #endif | |
96827780 | 1172 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1173 | s, strend, path_sep, &i); |
463ee0b2 | 1174 | s++; |
bb7a0f54 | 1175 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1176 | #ifdef VMS |
1177 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1178 | #else | |
1179 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1180 | #endif | |
c6ed36e1 | 1181 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1182 | MgTAINTEDDIR_on(mg); |
1e422769 | 1183 | return 0; |
1184 | } | |
463ee0b2 | 1185 | } |
79072805 LW |
1186 | } |
1187 | } | |
39e571d4 | 1188 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1189 | |
79072805 LW |
1190 | return 0; |
1191 | } | |
1192 | ||
1193 | int | |
864dbfa3 | 1194 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1195 | { |
7918f24d | 1196 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1197 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1198 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1199 | return 0; |
1200 | } | |
1201 | ||
88e89b8a | 1202 | int |
864dbfa3 | 1203 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1204 | { |
97aff369 | 1205 | dVAR; |
7918f24d | 1206 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1207 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1208 | #if defined(VMS) |
cea2e8a9 | 1209 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1210 | #else |
3280af22 | 1211 | if (PL_localizing) { |
fb73857a | 1212 | HE* entry; |
b0269e46 | 1213 | my_clearenv(); |
85fbaab2 NC |
1214 | hv_iterinit(MUTABLE_HV(sv)); |
1215 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1216 | I32 keylen; |
1217 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1218 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1219 | } |
1220 | } | |
1221 | #endif | |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | int | |
864dbfa3 | 1226 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1227 | { |
27da23d5 | 1228 | dVAR; |
7918f24d | 1229 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1230 | PERL_UNUSED_ARG(sv); |
1231 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1232 | #if defined(VMS) |
1233 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1234 | #else | |
1235 | my_clearenv(); | |
1236 | #endif | |
3e3baf6d | 1237 | return 0; |
66b1d557 HM |
1238 | } |
1239 | ||
64ca3a65 | 1240 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1241 | #ifdef HAS_SIGPROCMASK |
1242 | static void | |
1243 | restore_sigmask(pTHX_ SV *save_sv) | |
1244 | { | |
0bd48802 | 1245 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1246 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1247 | } |
1248 | #endif | |
66b1d557 | 1249 | int |
864dbfa3 | 1250 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1251 | { |
97aff369 | 1252 | dVAR; |
88e89b8a | 1253 | /* Are we fetching a signal entry? */ |
708854f2 | 1254 | int i = (I16)mg->mg_private; |
7918f24d NC |
1255 | |
1256 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1257 | ||
708854f2 NC |
1258 | if (!i) { |
1259 | mg->mg_private = i = whichsig(MgPV_nolen_const(mg)); | |
1260 | } | |
1261 | ||
e02bfb16 | 1262 | if (i > 0) { |
22c35a8c GS |
1263 | if(PL_psig_ptr[i]) |
1264 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1265 | else { |
46da273f | 1266 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1267 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1268 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1269 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1270 | #endif |
1271 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1272 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1273 | sigstate = SIG_DFL; | |
85b332e2 | 1274 | #endif |
88e89b8a | 1275 | /* cache state so we don't fetch it again */ |
8aad04aa | 1276 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1277 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1278 | else |
3280af22 | 1279 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1280 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1281 | SvTEMP_off(sv); |
1282 | } | |
1283 | } | |
1284 | return 0; | |
1285 | } | |
1286 | int | |
864dbfa3 | 1287 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1288 | { |
7918f24d | 1289 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
8772537c | 1290 | PERL_UNUSED_ARG(sv); |
179c85a2 | 1291 | |
38a124f0 | 1292 | magic_setsig(NULL, mg); |
179c85a2 | 1293 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1294 | } |
3d37d572 | 1295 | |
0a8e0eff | 1296 | Signal_t |
8aad04aa | 1297 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1298 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1299 | #else |
0a8e0eff | 1300 | Perl_csighandler(int sig) |
8aad04aa | 1301 | #endif |
0a8e0eff | 1302 | { |
1018e26f NIS |
1303 | #ifdef PERL_GET_SIG_CONTEXT |
1304 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1305 | #else | |
85b332e2 CL |
1306 | dTHX; |
1307 | #endif | |
23ada85b | 1308 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1309 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1310 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1311 | #endif |
2e34cc90 | 1312 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1313 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1314 | #ifdef KILL_BY_SIGPRC |
1315 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1316 | #else | |
1317 | exit(1); | |
1318 | #endif | |
1319 | #endif | |
406878dd | 1320 | if ( |
853d2c32 RGS |
1321 | #ifdef SIGILL |
1322 | sig == SIGILL || | |
1323 | #endif | |
1324 | #ifdef SIGBUS | |
1325 | sig == SIGBUS || | |
1326 | #endif | |
1327 | #ifdef SIGSEGV | |
1328 | sig == SIGSEGV || | |
1329 | #endif | |
1330 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1331 | /* Call the perl level handler now-- |
31c91b43 | 1332 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1333 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1334 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1335 | #else |
1336 | (*PL_sighandlerp)(sig); | |
92807b6d | 1337 | #endif |
406878dd | 1338 | else { |
31c91b43 | 1339 | if (!PL_psig_pend) return; |
406878dd GA |
1340 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1341 | * the current Perl opcode completes */ | |
1342 | PL_psig_pend[sig]++; | |
1343 | ||
1344 | #ifndef SIG_PENDING_DIE_COUNT | |
1345 | # define SIG_PENDING_DIE_COUNT 120 | |
1346 | #endif | |
fe13d51d | 1347 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1348 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1349 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1350 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1351 | } | |
0a8e0eff NIS |
1352 | } |
1353 | ||
2e34cc90 CL |
1354 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1355 | void | |
1356 | Perl_csighandler_init(void) | |
1357 | { | |
1358 | int sig; | |
27da23d5 | 1359 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1360 | |
1361 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1362 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1363 | dTHX; |
27da23d5 | 1364 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1365 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1366 | #endif |
1367 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1368 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1369 | #endif |
1370 | } | |
27da23d5 | 1371 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1372 | } |
1373 | #endif | |
1374 | ||
0a8e0eff NIS |
1375 | void |
1376 | Perl_despatch_signals(pTHX) | |
1377 | { | |
97aff369 | 1378 | dVAR; |
0a8e0eff NIS |
1379 | int sig; |
1380 | PL_sig_pending = 0; | |
1381 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1382 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1383 | PERL_BLOCKSIG_ADD(set, sig); |
1384 | PL_psig_pend[sig] = 0; | |
1385 | PERL_BLOCKSIG_BLOCK(set); | |
6e324d09 | 1386 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1387 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1388 | #else |
1389 | (*PL_sighandlerp)(sig); | |
92807b6d | 1390 | #endif |
25da4428 | 1391 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1392 | } |
1393 | } | |
1394 | } | |
1395 | ||
38a124f0 | 1396 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1397 | int |
864dbfa3 | 1398 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1399 | { |
27da23d5 | 1400 | dVAR; |
79072805 | 1401 | I32 i; |
cbbf8932 | 1402 | SV** svp = NULL; |
2d4fcd5e AJ |
1403 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1404 | * effects (due to closures). We must make sure that the new disposition | |
1405 | * is in place before it is called. | |
1406 | */ | |
cbbf8932 | 1407 | SV* to_dec = NULL; |
e72dc28c | 1408 | STRLEN len; |
2d4fcd5e AJ |
1409 | #ifdef HAS_SIGPROCMASK |
1410 | sigset_t set, save; | |
1411 | SV* save_sv; | |
1412 | #endif | |
d5263905 | 1413 | register const char *s = MgPV_const(mg,len); |
7918f24d NC |
1414 | |
1415 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1416 | ||
748a9306 LW |
1417 | if (*s == '_') { |
1418 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1419 | svp = &PL_diehook; |
38a124f0 NC |
1420 | else if (strEQ(s,"__WARN__") |
1421 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { | |
1422 | /* Merge the existing behaviours, which are as follows: | |
1423 | magic_setsig, we always set svp to &PL_warnhook | |
1424 | (hence we always change the warnings handler) | |
1425 | For magic_clearsig, we don't change the warnings handler if it's | |
1426 | set to the &PL_warnhook. */ | |
3280af22 | 1427 | svp = &PL_warnhook; |
38a124f0 | 1428 | } else if (sv) |
cea2e8a9 | 1429 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1430 | i = 0; |
38a124f0 | 1431 | if (svp && *svp) { |
9289f461 RGS |
1432 | if (*svp != PERL_WARNHOOK_FATAL) |
1433 | to_dec = *svp; | |
cbbf8932 | 1434 | *svp = NULL; |
4633a7c4 | 1435 | } |
748a9306 LW |
1436 | } |
1437 | else { | |
708854f2 NC |
1438 | i = (I16)mg->mg_private; |
1439 | if (!i) { | |
58a26b12 NC |
1440 | i = whichsig(s); /* ...no, a brick */ |
1441 | mg->mg_private = (U16)i; | |
708854f2 | 1442 | } |
86d86cad | 1443 | if (i <= 0) { |
a2a5de95 NC |
1444 | if (sv) |
1445 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); | |
748a9306 LW |
1446 | return 0; |
1447 | } | |
2d4fcd5e AJ |
1448 | #ifdef HAS_SIGPROCMASK |
1449 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1450 | sigemptyset(&set); | |
1451 | sigaddset(&set,i); | |
1452 | sigprocmask(SIG_BLOCK, &set, &save); | |
1453 | ENTER; | |
9ff8e806 | 1454 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1455 | SAVEFREESV(save_sv); |
1456 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1457 | #endif | |
1458 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1459 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1460 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1461 | #endif |
23ada85b | 1462 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1463 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1464 | #endif |
2e34cc90 | 1465 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1466 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1467 | #endif |
2d4fcd5e | 1468 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1469 | if (sv) { |
1470 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1471 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1472 | |
1473 | /* Signals don't change name during the program's execution, so once | |
1474 | they're cached in the appropriate slot of PL_psig_name, they can | |
1475 | stay there. | |
1476 | ||
1477 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1478 | at least, doing most of the work. */ | |
1479 | if (!PL_psig_name[i]) { | |
1480 | PL_psig_name[i] = newSVpvn(s, len); | |
1481 | SvREADONLY_on(PL_psig_name[i]); | |
1482 | } | |
38a124f0 | 1483 | } else { |
79fd3822 | 1484 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1485 | PL_psig_name[i] = NULL; |
1486 | PL_psig_ptr[i] = NULL; | |
1487 | } | |
748a9306 | 1488 | } |
38a124f0 | 1489 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1490 | if (i) { |
5c1546dc | 1491 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1492 | } |
748a9306 | 1493 | else |
b37c2d43 | 1494 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1495 | } else { |
9dfa190b NC |
1496 | if (sv && SvOK(sv)) { |
1497 | s = SvPV_force(sv, len); | |
1498 | } else { | |
1499 | sv = NULL; | |
1500 | } | |
1501 | if (sv && strEQ(s,"IGNORE")) { | |
1502 | if (i) { | |
23ada85b | 1503 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1504 | PL_sig_ignoring[i] = 1; |
1505 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1506 | #else |
9dfa190b | 1507 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1508 | #endif |
9dfa190b | 1509 | } |
2d4fcd5e | 1510 | } |
9dfa190b NC |
1511 | else if (!sv || strEQ(s,"DEFAULT") || !len) { |
1512 | if (i) { | |
2e34cc90 | 1513 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1514 | PL_sig_defaulting[i] = 1; |
1515 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1516 | #else |
9dfa190b | 1517 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1518 | #endif |
9dfa190b NC |
1519 | } |
1520 | } | |
1521 | else { | |
1522 | /* | |
1523 | * We should warn if HINT_STRICT_REFS, but without | |
1524 | * access to a known hint bit in a known OP, we can't | |
1525 | * tell whether HINT_STRICT_REFS is in force or not. | |
1526 | */ | |
1527 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1528 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1529 | SV_GMAGIC); | |
1530 | if (i) | |
1531 | (void)rsignal(i, PL_csighandlerp); | |
1532 | else | |
1533 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1534 | } |
748a9306 | 1535 | } |
9dfa190b | 1536 | |
2d4fcd5e AJ |
1537 | #ifdef HAS_SIGPROCMASK |
1538 | if(i) | |
1539 | LEAVE; | |
1540 | #endif | |
ef8d46e8 | 1541 | SvREFCNT_dec(to_dec); |
79072805 LW |
1542 | return 0; |
1543 | } | |
64ca3a65 | 1544 | #endif /* !PERL_MICRO */ |
79072805 LW |
1545 | |
1546 | int | |
864dbfa3 | 1547 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1548 | { |
97aff369 | 1549 | dVAR; |
7918f24d | 1550 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1551 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1552 | |
89c14e2e BB |
1553 | /* Skip _isaelem because _isa will handle it shortly */ |
1554 | if (PL_delaymagic & DM_ARRAY && mg->mg_type == PERL_MAGIC_isaelem) | |
1555 | return 0; | |
1556 | ||
0e446081 | 1557 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1558 | } |
1559 | ||
0e446081 | 1560 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1561 | int |
52b45067 RD |
1562 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1563 | { | |
1564 | dVAR; | |
1565 | HV* stash; | |
1566 | ||
7918f24d NC |
1567 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1568 | ||
52b45067 RD |
1569 | /* Bail out if destruction is going on */ |
1570 | if(PL_dirty) return 0; | |
1571 | ||
0e446081 NC |
1572 | if (sv) |
1573 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1574 | |
0e446081 NC |
1575 | /* XXX Once it's possible, we need to |
1576 | detect that our @ISA is aliased in | |
1577 | other stashes, and act on the stashes | |
1578 | of all of the aliases */ | |
1579 | ||
1580 | /* The first case occurs via setisa, | |
1581 | the second via setisa_elem, which | |
1582 | calls this same magic */ | |
52b45067 RD |
1583 | stash = GvSTASH( |
1584 | SvTYPE(mg->mg_obj) == SVt_PVGV | |
159b6efe NC |
1585 | ? (const GV *)mg->mg_obj |
1586 | : (const GV *)mg_find(mg->mg_obj, PERL_MAGIC_isa)->mg_obj | |
52b45067 RD |
1587 | ); |
1588 | ||
5562fa71 RGS |
1589 | if (stash) |
1590 | mro_isa_changed_in(stash); | |
52b45067 RD |
1591 | |
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | int | |
864dbfa3 | 1596 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1597 | { |
97aff369 | 1598 | dVAR; |
7918f24d | 1599 | PERL_ARGS_ASSERT_MAGIC_SETAMAGIC; |
8772537c AL |
1600 | PERL_UNUSED_ARG(sv); |
1601 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1602 | PL_amagic_generation++; |
463ee0b2 | 1603 | |
a0d0e21e LW |
1604 | return 0; |
1605 | } | |
463ee0b2 | 1606 | |
946ec16e | 1607 | int |
864dbfa3 | 1608 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1609 | { |
85fbaab2 | 1610 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1611 | I32 i = 0; |
7918f24d NC |
1612 | |
1613 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1614 | PERL_UNUSED_ARG(mg); |
7719e241 | 1615 | |
6ff81951 | 1616 | if (hv) { |
497b47a8 | 1617 | (void) hv_iterinit(hv); |
ad64d0ec | 1618 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
497b47a8 JH |
1619 | i = HvKEYS(hv); |
1620 | else { | |
1621 | while (hv_iternext(hv)) | |
1622 | i++; | |
1623 | } | |
6ff81951 GS |
1624 | } |
1625 | ||
1626 | sv_setiv(sv, (IV)i); | |
1627 | return 0; | |
1628 | } | |
1629 | ||
1630 | int | |
864dbfa3 | 1631 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1632 | { |
7918f24d | 1633 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1634 | PERL_UNUSED_ARG(mg); |
946ec16e | 1635 | if (LvTARG(sv)) { |
85fbaab2 | 1636 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1637 | } |
1638 | return 0; | |
ac27b0f5 | 1639 | } |
946ec16e | 1640 | |
e336de0d | 1641 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1642 | STATIC int |
e1ec3a88 | 1643 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e | 1644 | { |
97aff369 | 1645 | dVAR; |
a0d0e21e | 1646 | dSP; |
463ee0b2 | 1647 | |
7918f24d NC |
1648 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1649 | ||
924508f0 GS |
1650 | PUSHMARK(SP); |
1651 | EXTEND(SP, n); | |
33c27489 | 1652 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1653 | if (n > 1) { |
93965878 | 1654 | if (mg->mg_ptr) { |
565764a8 | 1655 | if (mg->mg_len >= 0) |
6e449a3a | 1656 | mPUSHp(mg->mg_ptr, mg->mg_len); |
565764a8 | 1657 | else if (mg->mg_len == HEf_SVKEY) |
ad64d0ec | 1658 | PUSHs(MUTABLE_SV(mg->mg_ptr)); |
93965878 | 1659 | } |
14befaf4 | 1660 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
6e449a3a | 1661 | mPUSHi(mg->mg_len); |
93965878 NIS |
1662 | } |
1663 | } | |
1664 | if (n > 2) { | |
1665 | PUSHs(val); | |
88e89b8a | 1666 | } |
463ee0b2 LW |
1667 | PUTBACK; |
1668 | ||
864dbfa3 | 1669 | return call_method(meth, flags); |
946ec16e | 1670 | } |
1671 | ||
76e3520e | 1672 | STATIC int |
e1ec3a88 | 1673 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1674 | { |
27da23d5 | 1675 | dVAR; dSP; |
463ee0b2 | 1676 | |
7918f24d NC |
1677 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1678 | ||
a0d0e21e LW |
1679 | ENTER; |
1680 | SAVETMPS; | |
e788e7d3 | 1681 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1682 | |
33c27489 | 1683 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1684 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1685 | } |
463ee0b2 | 1686 | |
d3acc0f7 | 1687 | POPSTACK; |
a0d0e21e LW |
1688 | FREETMPS; |
1689 | LEAVE; | |
1690 | return 0; | |
1691 | } | |
463ee0b2 | 1692 | |
a0d0e21e | 1693 | int |
864dbfa3 | 1694 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1695 | { |
7918f24d NC |
1696 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1697 | ||
fd69380d | 1698 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1699 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1700 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1701 | return 0; |
1702 | } | |
1703 | ||
1704 | int | |
864dbfa3 | 1705 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1706 | { |
27da23d5 | 1707 | dVAR; dSP; |
b112cff9 DM |
1708 | MAGIC *tmg; |
1709 | SV *val; | |
7918f24d NC |
1710 | |
1711 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1712 | ||
b112cff9 DM |
1713 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1714 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1715 | * public flags indicate its value based on copying from $val. Doing | |
1716 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1717 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1718 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1719 | * enabled, even though taint magic is in the chain. In which case, | |
1720 | * fake up a temporary tainted value (this is easier than temporarily | |
1721 | * re-enabling magic on sv). */ | |
1722 | ||
1723 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1724 | && (tmg->mg_len & 1)) | |
1725 | { | |
1726 | val = sv_mortalcopy(sv); | |
1727 | SvTAINTED_on(val); | |
1728 | } | |
1729 | else | |
1730 | val = sv; | |
1731 | ||
a60c0954 | 1732 | ENTER; |
e788e7d3 | 1733 | PUSHSTACKi(PERLSI_MAGIC); |
b112cff9 | 1734 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, val); |
d3acc0f7 | 1735 | POPSTACK; |
a60c0954 | 1736 | LEAVE; |
463ee0b2 LW |
1737 | return 0; |
1738 | } | |
1739 | ||
1740 | int | |
864dbfa3 | 1741 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1742 | { |
7918f24d NC |
1743 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1744 | ||
a0d0e21e LW |
1745 | return magic_methpack(sv,mg,"DELETE"); |
1746 | } | |
463ee0b2 | 1747 | |
93965878 NIS |
1748 | |
1749 | U32 | |
864dbfa3 | 1750 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1751 | { |
27da23d5 | 1752 | dVAR; dSP; |
22846ab4 | 1753 | I32 retval = 0; |
93965878 | 1754 | |
7918f24d NC |
1755 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1756 | ||
93965878 NIS |
1757 | ENTER; |
1758 | SAVETMPS; | |
e788e7d3 | 1759 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1760 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1761 | sv = *PL_stack_sp--; |
22846ab4 AB |
1762 | retval = SvIV(sv)-1; |
1763 | if (retval < -1) | |
1764 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1765 | } |
d3acc0f7 | 1766 | POPSTACK; |
93965878 NIS |
1767 | FREETMPS; |
1768 | LEAVE; | |
22846ab4 | 1769 | return (U32) retval; |
93965878 NIS |
1770 | } |
1771 | ||
cea2e8a9 GS |
1772 | int |
1773 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1774 | { |
27da23d5 | 1775 | dVAR; dSP; |
463ee0b2 | 1776 | |
7918f24d NC |
1777 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1778 | ||
e336de0d | 1779 | ENTER; |
e788e7d3 | 1780 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1781 | PUSHMARK(SP); |
33c27489 | 1782 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1783 | PUTBACK; |
864dbfa3 | 1784 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1785 | POPSTACK; |
a60c0954 | 1786 | LEAVE; |
a3bcc51e | 1787 | |
463ee0b2 LW |
1788 | return 0; |
1789 | } | |
1790 | ||
1791 | int | |
864dbfa3 | 1792 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1793 | { |
27da23d5 | 1794 | dVAR; dSP; |
666ea192 | 1795 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 | 1796 | |
7918f24d NC |
1797 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1798 | ||
463ee0b2 | 1799 | ENTER; |
a0d0e21e | 1800 | SAVETMPS; |
e788e7d3 | 1801 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1802 | PUSHMARK(SP); |
1803 | EXTEND(SP, 2); | |
33c27489 | 1804 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1805 | if (SvOK(key)) |
1806 | PUSHs(key); | |
1807 | PUTBACK; | |
1808 | ||
864dbfa3 | 1809 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1810 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1811 | |
d3acc0f7 | 1812 | POPSTACK; |
a0d0e21e LW |
1813 | FREETMPS; |
1814 | LEAVE; | |
79072805 LW |
1815 | return 0; |
1816 | } | |
1817 | ||
1818 | int | |
1146e912 | 1819 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1820 | { |
7918f24d NC |
1821 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1822 | ||
a0d0e21e | 1823 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1824 | } |
a0d0e21e | 1825 | |
a3bcc51e TP |
1826 | SV * |
1827 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1828 | { | |
27da23d5 | 1829 | dVAR; dSP; |
5fcbf73d | 1830 | SV *retval; |
ad64d0ec NC |
1831 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1832 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1833 | |
7918f24d NC |
1834 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1835 | ||
a3bcc51e TP |
1836 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1837 | SV *key; | |
bfcb3514 | 1838 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1839 | /* we are in an iteration so the hash cannot be empty */ |
1840 | return &PL_sv_yes; | |
1841 | /* no xhv_eiter so now use FIRSTKEY */ | |
1842 | key = sv_newmortal(); | |
ad64d0ec | 1843 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1844 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1845 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1846 | } | |
1847 | ||
1848 | /* there is a SCALAR method that we can call */ | |
1849 | ENTER; | |
1850 | PUSHSTACKi(PERLSI_MAGIC); | |
1851 | PUSHMARK(SP); | |
1852 | EXTEND(SP, 1); | |
1853 | PUSHs(tied); | |
1854 | PUTBACK; | |
1855 | ||
1856 | if (call_method("SCALAR", G_SCALAR)) | |
1857 | retval = *PL_stack_sp--; | |
5fcbf73d AL |
1858 | else |
1859 | retval = &PL_sv_undef; | |
a3bcc51e TP |
1860 | POPSTACK; |
1861 | LEAVE; | |
1862 | return retval; | |
1863 | } | |
1864 | ||
a0d0e21e | 1865 | int |
864dbfa3 | 1866 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1867 | { |
97aff369 | 1868 | dVAR; |
8772537c AL |
1869 | GV * const gv = PL_DBline; |
1870 | const I32 i = SvTRUE(sv); | |
1871 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1872 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
1873 | |
1874 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1875 | ||
8772537c AL |
1876 | if (svp && SvIOKp(*svp)) { |
1877 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1878 | if (o) { | |
1879 | /* set or clear breakpoint in the relevant control op */ | |
1880 | if (i) | |
1881 | o->op_flags |= OPf_SPECIAL; | |
1882 | else | |
1883 | o->op_flags &= ~OPf_SPECIAL; | |
1884 | } | |
5df8de69 | 1885 | } |
79072805 LW |
1886 | return 0; |
1887 | } | |
1888 | ||
1889 | int | |
8772537c | 1890 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 1891 | { |
97aff369 | 1892 | dVAR; |
502c6561 | 1893 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
1894 | |
1895 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
1896 | ||
83bf042f | 1897 | if (obj) { |
fc15ae8f | 1898 | sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1899 | } else { |
1900 | SvOK_off(sv); | |
1901 | } | |
79072805 LW |
1902 | return 0; |
1903 | } | |
1904 | ||
1905 | int | |
864dbfa3 | 1906 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1907 | { |
97aff369 | 1908 | dVAR; |
502c6561 | 1909 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
1910 | |
1911 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
1912 | ||
83bf042f | 1913 | if (obj) { |
fc15ae8f | 1914 | av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop)); |
83bf042f | 1915 | } else { |
a2a5de95 NC |
1916 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
1917 | "Attempt to set length of freed array"); | |
83bf042f NC |
1918 | } |
1919 | return 0; | |
1920 | } | |
1921 | ||
1922 | int | |
1923 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
1924 | { | |
97aff369 | 1925 | dVAR; |
7918f24d NC |
1926 | |
1927 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 1928 | PERL_UNUSED_ARG(sv); |
7918f24d | 1929 | |
94f3782b DM |
1930 | /* during global destruction, mg_obj may already have been freed */ |
1931 | if (PL_in_clean_all) | |
1ea47f64 | 1932 | return 0; |
94f3782b | 1933 | |
83bf042f NC |
1934 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
1935 | ||
1936 | if (mg) { | |
1937 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
1938 | reference. Hence the we (the array) are about to go away with it | |
1939 | still pointing at us. Clear its pointer, else it would be pointing | |
1940 | at free memory. See the comment in sv_magic about reference loops, | |
1941 | and why it can't own a reference to us. */ | |
1942 | mg->mg_obj = 0; | |
1943 | } | |
a0d0e21e LW |
1944 | return 0; |
1945 | } | |
1946 | ||
1947 | int | |
864dbfa3 | 1948 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1949 | { |
97aff369 | 1950 | dVAR; |
8772537c | 1951 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
1952 | |
1953 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
3881461a | 1954 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1955 | |
a0d0e21e | 1956 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
1957 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
1958 | if (found && found->mg_len >= 0) { | |
1959 | I32 i = found->mg_len; | |
7e2040f0 | 1960 | if (DO_UTF8(lsv)) |
a0ed51b3 | 1961 | sv_pos_b2u(lsv, &i); |
fc15ae8f | 1962 | sv_setiv(sv, i + CopARYBASE_get(PL_curcop)); |
a0d0e21e LW |
1963 | return 0; |
1964 | } | |
1965 | } | |
0c34ef67 | 1966 | SvOK_off(sv); |
a0d0e21e LW |
1967 | return 0; |
1968 | } | |
1969 | ||
1970 | int | |
864dbfa3 | 1971 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1972 | { |
97aff369 | 1973 | dVAR; |
8772537c | 1974 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
1975 | SSize_t pos; |
1976 | STRLEN len; | |
c00206c8 | 1977 | STRLEN ulen = 0; |
53d44271 | 1978 | MAGIC* found; |
a0d0e21e | 1979 | |
7918f24d | 1980 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
3881461a | 1981 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1982 | |
a0d0e21e | 1983 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
1984 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
1985 | else | |
1986 | found = NULL; | |
1987 | if (!found) { | |
a0d0e21e LW |
1988 | if (!SvOK(sv)) |
1989 | return 0; | |
d83f0a82 NC |
1990 | #ifdef PERL_OLD_COPY_ON_WRITE |
1991 | if (SvIsCOW(lsv)) | |
1992 | sv_force_normal_flags(lsv, 0); | |
1993 | #endif | |
3881461a | 1994 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 1995 | NULL, 0); |
a0d0e21e LW |
1996 | } |
1997 | else if (!SvOK(sv)) { | |
3881461a | 1998 | found->mg_len = -1; |
a0d0e21e LW |
1999 | return 0; |
2000 | } | |
2001 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
2002 | ||
fc15ae8f | 2003 | pos = SvIV(sv) - CopARYBASE_get(PL_curcop); |
a0ed51b3 | 2004 | |
7e2040f0 | 2005 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
2006 | ulen = sv_len_utf8(lsv); |
2007 | if (ulen) | |
2008 | len = ulen; | |
a0ed51b3 LW |
2009 | } |
2010 | ||
a0d0e21e LW |
2011 | if (pos < 0) { |
2012 | pos += len; | |
2013 | if (pos < 0) | |
2014 | pos = 0; | |
2015 | } | |
eb160463 | 2016 | else if (pos > (SSize_t)len) |
a0d0e21e | 2017 | pos = len; |
a0ed51b3 LW |
2018 | |
2019 | if (ulen) { | |
2020 | I32 p = pos; | |
2021 | sv_pos_u2b(lsv, &p, 0); | |
2022 | pos = p; | |
2023 | } | |
727405f8 | 2024 | |
3881461a AL |
2025 | found->mg_len = pos; |
2026 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2027 | |
79072805 LW |
2028 | return 0; |
2029 | } | |
2030 | ||
2031 | int | |
864dbfa3 | 2032 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2033 | { |
2034 | STRLEN len; | |
35a4481c | 2035 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2036 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2037 | STRLEN offs = LvTARGOFF(sv); |
2038 | STRLEN rem = LvTARGLEN(sv); | |
7918f24d NC |
2039 | |
2040 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2041 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2042 | |
9aa983d2 | 2043 | if (SvUTF8(lsv)) |
d931b1be | 2044 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
777f7c56 | 2045 | if (offs > len) |
6ff81951 | 2046 | offs = len; |
777f7c56 | 2047 | if (rem > len - offs) |
6ff81951 | 2048 | rem = len - offs; |
1c900557 | 2049 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2050 | if (SvUTF8(lsv)) |
2ef4b674 | 2051 | SvUTF8_on(sv); |
6ff81951 GS |
2052 | return 0; |
2053 | } | |
2054 | ||
2055 | int | |
864dbfa3 | 2056 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2057 | { |
97aff369 | 2058 | dVAR; |
9aa983d2 | 2059 | STRLEN len; |
5fcbf73d | 2060 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2061 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2062 | STRLEN lvoff = LvTARGOFF(sv); |
2063 | STRLEN lvlen = LvTARGLEN(sv); | |
7918f24d NC |
2064 | |
2065 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2066 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2067 | |
1aa99e6b | 2068 | if (DO_UTF8(sv)) { |
9aa983d2 | 2069 | sv_utf8_upgrade(lsv); |
d931b1be | 2070 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
9aa983d2 | 2071 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
b76f3ce2 | 2072 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
2073 | SvUTF8_on(lsv); |
2074 | } | |
9bf12eaf | 2075 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2076 | const char *utf8; |
d931b1be | 2077 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
b76f3ce2 | 2078 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
2079 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
2080 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
2081 | Safefree(utf8); | |
1aa99e6b | 2082 | } |
b76f3ce2 GB |
2083 | else { |
2084 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
2085 | LvTARGLEN(sv) = len; | |
2086 | } | |
2087 | ||
79072805 LW |
2088 | return 0; |
2089 | } | |
2090 | ||
2091 | int | |
864dbfa3 | 2092 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2093 | { |
97aff369 | 2094 | dVAR; |
7918f24d NC |
2095 | |
2096 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2097 | PERL_UNUSED_ARG(sv); |
7918f24d | 2098 | |
27cc343c | 2099 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2100 | return 0; |
2101 | } | |
2102 | ||
2103 | int | |
864dbfa3 | 2104 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2105 | { |
97aff369 | 2106 | dVAR; |
7918f24d NC |
2107 | |
2108 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2109 | PERL_UNUSED_ARG(sv); |
7918f24d | 2110 | |
b01e650a DM |
2111 | /* update taint status */ |
2112 | if (PL_tainted) | |
2113 | mg->mg_len |= 1; | |
2114 | else | |
2115 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2116 | return 0; |
2117 | } | |
2118 | ||
2119 | int | |
864dbfa3 | 2120 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2121 | { |
35a4481c | 2122 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2123 | |
2124 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2125 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2126 | |
6136c704 AL |
2127 | if (lsv) |
2128 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2129 | else | |
0c34ef67 | 2130 | SvOK_off(sv); |
6ff81951 | 2131 | |
6ff81951 GS |
2132 | return 0; |
2133 | } | |
2134 | ||
2135 | int | |
864dbfa3 | 2136 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2137 | { |
7918f24d | 2138 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2139 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2140 | do_vecset(sv); /* XXX slurp this routine */ |
2141 | return 0; | |
2142 | } | |
2143 | ||
2144 | int | |
864dbfa3 | 2145 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2146 | { |
97aff369 | 2147 | dVAR; |
a0714e2c | 2148 | SV *targ = NULL; |
7918f24d NC |
2149 | |
2150 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2151 | ||
5f05dabc | 2152 | if (LvTARGLEN(sv)) { |
68dc0745 | 2153 | if (mg->mg_obj) { |
8772537c | 2154 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2155 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2156 | if (he) |
2157 | targ = HeVAL(he); | |
68dc0745 | 2158 | } |
2159 | else { | |
502c6561 | 2160 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2161 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2162 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2163 | } | |
46da273f | 2164 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2165 | /* somebody else defined it for us */ |
2166 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2167 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2168 | LvTARGLEN(sv) = 0; |
2169 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2170 | mg->mg_obj = NULL; |
68dc0745 | 2171 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2172 | } | |
5f05dabc | 2173 | } |
71be2cbc | 2174 | else |
2175 | targ = LvTARG(sv); | |
3280af22 | 2176 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2177 | return 0; |
2178 | } | |
2179 | ||
2180 | int | |
864dbfa3 | 2181 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2182 | { |
7918f24d | 2183 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2184 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2185 | if (LvTARGLEN(sv)) |
68dc0745 | 2186 | vivify_defelem(sv); |
2187 | if (LvTARG(sv)) { | |
5f05dabc | 2188 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2189 | SvSETMAGIC(LvTARG(sv)); |
2190 | } | |
5f05dabc | 2191 | return 0; |
2192 | } | |
2193 | ||
71be2cbc | 2194 | void |
864dbfa3 | 2195 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2196 | { |
97aff369 | 2197 | dVAR; |
74e13ce4 | 2198 | MAGIC *mg; |
a0714e2c | 2199 | SV *value = NULL; |
71be2cbc | 2200 | |
7918f24d NC |
2201 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2202 | ||
14befaf4 | 2203 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2204 | return; |
68dc0745 | 2205 | if (mg->mg_obj) { |
8772537c | 2206 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2207 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2208 | if (he) |
2209 | value = HeVAL(he); | |
3280af22 | 2210 | if (!value || value == &PL_sv_undef) |
be2597df | 2211 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2212 | } |
68dc0745 | 2213 | else { |
502c6561 | 2214 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2215 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2216 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2217 | else { |
d4c19fe8 | 2218 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2219 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2220 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2221 | } |
2222 | } | |
b37c2d43 | 2223 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2224 | SvREFCNT_dec(LvTARG(sv)); |
2225 | LvTARG(sv) = value; | |
71be2cbc | 2226 | LvTARGLEN(sv) = 0; |
68dc0745 | 2227 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2228 | mg->mg_obj = NULL; |
68dc0745 | 2229 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2230 | } |
2231 | ||
2232 | int | |
864dbfa3 | 2233 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2234 | { |
7918f24d | 2235 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
502c6561 | 2236 | return Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
810b8aa5 GS |
2237 | } |
2238 | ||
2239 | int | |
864dbfa3 | 2240 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2241 | { |
7918f24d | 2242 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2243 | PERL_UNUSED_CONTEXT; |
565764a8 | 2244 | mg->mg_len = -1; |
1f730e6c FC |
2245 | if (!isGV_with_GP(sv)) |
2246 | SvSCREAM_off(sv); | |
93a17b20 LW |
2247 | return 0; |
2248 | } | |
2249 | ||
2250 | int | |
864dbfa3 | 2251 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2252 | { |
35a4481c | 2253 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2254 | |
7918f24d NC |
2255 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2256 | ||
79072805 | 2257 | if (uf && uf->uf_set) |
24f81a43 | 2258 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2259 | return 0; |
2260 | } | |
2261 | ||
c277df42 | 2262 | int |
faf82a0b AE |
2263 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2264 | { | |
488344d2 | 2265 | const char type = mg->mg_type; |
7918f24d NC |
2266 | |
2267 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2268 | ||
488344d2 NC |
2269 | if (type == PERL_MAGIC_qr) { |
2270 | } else if (type == PERL_MAGIC_bm) { | |
2271 | SvTAIL_off(sv); | |
2272 | SvVALID_off(sv); | |
2273 | } else { | |
2274 | assert(type == PERL_MAGIC_fm); | |
2275 | SvCOMPILED_off(sv); | |
2276 | } | |
2277 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2278 | } |
2279 | ||
7a4c00b4 | 2280 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2281 | int |
864dbfa3 | 2282 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2283 | { |
7918f24d NC |
2284 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2285 | ||
bbce6d69 | 2286 | /* |
838b5b74 | 2287 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2288 | * and vanished with a faint plop. |
2289 | */ | |
96a5add6 | 2290 | PERL_UNUSED_CONTEXT; |
8772537c | 2291 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2292 | if (mg->mg_ptr) { |
2293 | Safefree(mg->mg_ptr); | |
2294 | mg->mg_ptr = NULL; | |
565764a8 | 2295 | mg->mg_len = -1; |
7a4c00b4 | 2296 | } |
bbce6d69 | 2297 | return 0; |
2298 | } | |
7a4c00b4 | 2299 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2300 | |
7e8c5dac HS |
2301 | /* Just clear the UTF-8 cache data. */ |
2302 | int | |
2303 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2304 | { | |
7918f24d | 2305 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2306 | PERL_UNUSED_CONTEXT; |
8772537c | 2307 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2308 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2309 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2310 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2311 | return 0; | |
2312 | } | |
2313 | ||
bbce6d69 | 2314 | int |
864dbfa3 | 2315 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2316 | { |
97aff369 | 2317 | dVAR; |
e1ec3a88 | 2318 | register const char *s; |
2fdbfb4d AB |
2319 | register I32 paren; |
2320 | register const REGEXP * rx; | |
2321 | const char * const remaining = mg->mg_ptr + 1; | |
79072805 | 2322 | I32 i; |
8990e307 | 2323 | STRLEN len; |
2fdbfb4d | 2324 | |
7918f24d NC |
2325 | PERL_ARGS_ASSERT_MAGIC_SET; |
2326 | ||
79072805 | 2327 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2328 | case '\015': /* $^MATCH */ |
2329 | if (strEQ(remaining, "ATCH")) | |
2330 | goto do_match; | |
2331 | case '`': /* ${^PREMATCH} caught below */ | |
2332 | do_prematch: | |
f1b875a0 | 2333 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2334 | goto setparen; |
2335 | case '\'': /* ${^POSTMATCH} caught below */ | |
2336 | do_postmatch: | |
f1b875a0 | 2337 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2338 | goto setparen; |
2339 | case '&': | |
2340 | do_match: | |
f1b875a0 | 2341 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2342 | goto setparen; |
2343 | case '1': case '2': case '3': case '4': | |
2344 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2345 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2346 | setparen: |
1e05feb3 | 2347 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
2348 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
2349 | break; | |
1e05feb3 | 2350 | } else { |
2fdbfb4d AB |
2351 | /* Croak with a READONLY error when a numbered match var is |
2352 | * set without a previous pattern match. Unless it's C<local $1> | |
2353 | */ | |
2354 | if (!PL_localizing) { | |
f1f66076 | 2355 | Perl_croak(aTHX_ "%s", PL_no_modify); |
2fdbfb4d AB |
2356 | } |
2357 | } | |
748a9306 | 2358 | case '\001': /* ^A */ |
3280af22 | 2359 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2360 | break; |
49460fe6 | 2361 | case '\003': /* ^C */ |
38ab35f8 | 2362 | PL_minus_c = (bool)SvIV(sv); |
49460fe6 NIS |
2363 | break; |
2364 | ||
79072805 | 2365 | case '\004': /* ^D */ |
b4ab917c | 2366 | #ifdef DEBUGGING |
b83604b4 | 2367 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2368 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2369 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2370 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2371 | #else |
38ab35f8 | 2372 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2373 | #endif |
79072805 | 2374 | break; |
28f23441 | 2375 | case '\005': /* ^E */ |
d0063567 | 2376 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2377 | #ifdef VMS |
38ab35f8 | 2378 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2379 | #else |
2380 | # ifdef WIN32 | |
d0063567 | 2381 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2382 | # else |
2383 | # ifdef OS2 | |
38ab35f8 | 2384 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2385 | # else |
d0063567 | 2386 | /* will anyone ever use this? */ |
38ab35f8 | 2387 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2388 | # endif |
2389 | # endif | |
22fae026 | 2390 | #endif |
d0063567 DK |
2391 | } |
2392 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2393 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2394 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2395 | PL_encoding = newSVsv(sv); | |
2396 | } | |
2397 | else { | |
a0714e2c | 2398 | PL_encoding = NULL; |
d0063567 DK |
2399 | } |
2400 | } | |
2401 | break; | |
79072805 | 2402 | case '\006': /* ^F */ |
38ab35f8 | 2403 | PL_maxsysfd = SvIV(sv); |
79072805 | 2404 | break; |
a0d0e21e | 2405 | case '\010': /* ^H */ |
38ab35f8 | 2406 | PL_hints = SvIV(sv); |
a0d0e21e | 2407 | break; |
9d116dd7 | 2408 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2409 | Safefree(PL_inplace); |
bd61b366 | 2410 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2411 | break; |
28f23441 | 2412 | case '\017': /* ^O */ |
ac27b0f5 | 2413 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2414 | Safefree(PL_osname); |
bd61b366 | 2415 | PL_osname = NULL; |
3511154c DM |
2416 | if (SvOK(sv)) { |
2417 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2418 | PL_osname = savesvpv(sv); |
3511154c | 2419 | } |
ac27b0f5 NIS |
2420 | } |
2421 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2422 | STRLEN len; |
2423 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2424 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2425 | SV *tmp; |
8b850bd5 NC |
2426 | |
2427 | ||
2428 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2429 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2430 | |
2431 | /* Opening for input is more common than opening for output, so | |
2432 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2433 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2434 | SvUTF8(sv)) |
2435 | : newSVpvs_flags("", SvUTF8(sv)); | |
2436 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2437 | mg_set(tmp); | |
8b850bd5 | 2438 | |
f747ebd6 Z |
2439 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2440 | SvUTF8(sv)); | |
2441 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2442 | mg_set(tmp); | |
ac27b0f5 | 2443 | } |
28f23441 | 2444 | break; |
79072805 | 2445 | case '\020': /* ^P */ |
2fdbfb4d AB |
2446 | if (*remaining == '\0') { /* ^P */ |
2447 | PL_perldb = SvIV(sv); | |
2448 | if (PL_perldb && !PL_DBsingle) | |
2449 | init_debugger(); | |
2450 | break; | |
2451 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2452 | goto do_prematch; | |
2453 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2454 | goto do_postmatch; | |
2455 | } | |
79072805 | 2456 | case '\024': /* ^T */ |
88e89b8a | 2457 | #ifdef BIG_TIME |
6b88bc9c | 2458 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2459 | #else |
38ab35f8 | 2460 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2461 | #endif |
79072805 | 2462 | break; |
e07ea26a NC |
2463 | case '\025': /* ^UTF8CACHE */ |
2464 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2465 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2466 | } | |
2467 | break; | |
fde18df1 | 2468 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2469 | if (*(mg->mg_ptr+1) == '\0') { |
2470 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2471 | i = SvIV(sv); |
ac27b0f5 | 2472 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2473 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2474 | } |
599cee73 | 2475 | } |
0a378802 | 2476 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2477 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2478 | if (!SvPOK(sv) && PL_localizing) { |
2479 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2480 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2481 | break; |
2482 | } | |
f4fc7782 | 2483 | { |
b5477537 | 2484 | STRLEN len, i; |
d3a7d8c7 | 2485 | int accumulate = 0 ; |
f4fc7782 | 2486 | int any_fatals = 0 ; |
b83604b4 | 2487 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2488 | for (i = 0 ; i < len ; ++i) { |
2489 | accumulate |= ptr[i] ; | |
2490 | any_fatals |= (ptr[i] & 0xAA) ; | |
2491 | } | |
4243c432 NC |
2492 | if (!accumulate) { |
2493 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2494 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2495 | PL_compiling.cop_warnings = pWARN_NONE; | |
2496 | } | |
72dc9ed5 NC |
2497 | /* Yuck. I can't see how to abstract this: */ |
2498 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2499 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2500 | if (!specialWARN(PL_compiling.cop_warnings)) |
2501 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2502 | PL_compiling.cop_warnings = pWARN_ALL; |
2503 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2504 | } |
d3a7d8c7 | 2505 | else { |
72dc9ed5 NC |
2506 | STRLEN len; |
2507 | const char *const p = SvPV_const(sv, len); | |
2508 | ||
2509 | PL_compiling.cop_warnings | |
8ee4cf24 | 2510 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2511 | p, len); |
2512 | ||
d3a7d8c7 GS |
2513 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2514 | PL_dowarn |= G_WARN_ONCE ; | |
2515 | } | |
f4fc7782 | 2516 | |
d3a7d8c7 | 2517 | } |
4438c4b7 | 2518 | } |
971a9dd3 | 2519 | } |
79072805 LW |
2520 | break; |
2521 | case '.': | |
3280af22 NIS |
2522 | if (PL_localizing) { |
2523 | if (PL_localizing == 1) | |
7766f137 | 2524 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2525 | } |
3280af22 | 2526 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2527 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2528 | break; |
2529 | case '^': | |
099be4f1 DM |
2530 | if (isGV_with_GP(PL_defoutgv)) { |
2531 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); | |
2532 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2533 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
2534 | } | |
79072805 LW |
2535 | break; |
2536 | case '~': | |
099be4f1 DM |
2537 | if (isGV_with_GP(PL_defoutgv)) { |
2538 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); | |
2539 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2540 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
2541 | } | |
79072805 LW |
2542 | break; |
2543 | case '=': | |
099be4f1 DM |
2544 | if (isGV_with_GP(PL_defoutgv)) |
2545 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); | |
79072805 LW |
2546 | break; |
2547 | case '-': | |
099be4f1 DM |
2548 | if (isGV_with_GP(PL_defoutgv)) { |
2549 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); | |
2550 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
2551 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
2552 | } | |
79072805 LW |
2553 | break; |
2554 | case '%': | |
099be4f1 DM |
2555 | if (isGV_with_GP(PL_defoutgv)) |
2556 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); | |
79072805 LW |
2557 | break; |
2558 | case '|': | |
4b65379b | 2559 | { |
099be4f1 | 2560 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2561 | if(!io) |
2562 | break; | |
38ab35f8 | 2563 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2564 | IoFLAGS(io) &= ~IOf_FLUSH; |
2565 | else { | |
2566 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2567 | PerlIO *ofp = IoOFP(io); | |
2568 | if (ofp) | |
2569 | (void)PerlIO_flush(ofp); | |
2570 | IoFLAGS(io) |= IOf_FLUSH; | |
2571 | } | |
2572 | } | |
79072805 LW |
2573 | } |
2574 | break; | |
79072805 | 2575 | case '/': |
3280af22 | 2576 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2577 | PL_rs = newSVsv(sv); |
79072805 LW |
2578 | break; |
2579 | case '\\': | |
ef8d46e8 | 2580 | SvREFCNT_dec(PL_ors_sv); |
009c130f | 2581 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2582 | PL_ors_sv = newSVsv(sv); |
009c130f | 2583 | } |
e3c19b7b | 2584 | else { |
a0714e2c | 2585 | PL_ors_sv = NULL; |
e3c19b7b | 2586 | } |
79072805 | 2587 | break; |
79072805 | 2588 | case '[': |
38ab35f8 | 2589 | CopARYBASE_set(&PL_compiling, SvIV(sv)); |
79072805 LW |
2590 | break; |
2591 | case '?': | |
ff0cee69 | 2592 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2593 | if (PL_localizing == 2) { |
41cb7b2b | 2594 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2595 | PL_statusvalue = LvTARGOFF(sv); |
2596 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2597 | } |
2598 | else | |
2599 | #endif | |
2600 | #ifdef VMSISH_STATUS | |
2601 | if (VMSISH_STATUS) | |
fb38d079 | 2602 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2603 | else |
2604 | #endif | |
38ab35f8 | 2605 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2606 | break; |
2607 | case '!': | |
93189314 JH |
2608 | { |
2609 | #ifdef VMS | |
2610 | # define PERL_VMS_BANG vaxc$errno | |
2611 | #else | |
2612 | # define PERL_VMS_BANG 0 | |
2613 | #endif | |
91487cfc | 2614 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2615 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2616 | } | |
79072805 LW |
2617 | break; |
2618 | case '<': | |
38ab35f8 | 2619 | PL_uid = SvIV(sv); |
3280af22 NIS |
2620 | if (PL_delaymagic) { |
2621 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2622 | break; /* don't do magic till later */ |
2623 | } | |
2624 | #ifdef HAS_SETRUID | |
b28d0864 | 2625 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2626 | #else |
2627 | #ifdef HAS_SETREUID | |
3280af22 | 2628 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2629 | #else |
85e6fe83 | 2630 | #ifdef HAS_SETRESUID |
b28d0864 | 2631 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2632 | #else |
75870ed3 | 2633 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2634 | #ifdef PERL_DARWIN | |
2635 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2636 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2637 | (void)PerlProc_setuid(0); | |
2638 | #endif | |
b28d0864 | 2639 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2640 | } else { |
d8eceb89 | 2641 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2642 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2643 | } |
79072805 LW |
2644 | #endif |
2645 | #endif | |
85e6fe83 | 2646 | #endif |
d8eceb89 | 2647 | PL_uid = PerlProc_getuid(); |
79072805 LW |
2648 | break; |
2649 | case '>': | |
38ab35f8 | 2650 | PL_euid = SvIV(sv); |
3280af22 NIS |
2651 | if (PL_delaymagic) { |
2652 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2653 | break; /* don't do magic till later */ |
2654 | } | |
2655 | #ifdef HAS_SETEUID | |
3280af22 | 2656 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2657 | #else |
2658 | #ifdef HAS_SETREUID | |
b28d0864 | 2659 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2660 | #else |
2661 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2662 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2663 | #else |
b28d0864 NIS |
2664 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2665 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2666 | else { |
e8ee3774 | 2667 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2668 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2669 | } |
79072805 LW |
2670 | #endif |
2671 | #endif | |
85e6fe83 | 2672 | #endif |
d8eceb89 | 2673 | PL_euid = PerlProc_geteuid(); |
79072805 LW |
2674 | break; |
2675 | case '(': | |
38ab35f8 | 2676 | PL_gid = SvIV(sv); |
3280af22 NIS |
2677 | if (PL_delaymagic) { |
2678 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2679 | break; /* don't do magic till later */ |
2680 | } | |
2681 | #ifdef HAS_SETRGID | |
b28d0864 | 2682 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2683 | #else |
2684 | #ifdef HAS_SETREGID | |
3280af22 | 2685 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2686 | #else |
2687 | #ifdef HAS_SETRESGID | |
b28d0864 | 2688 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2689 | #else |
b28d0864 NIS |
2690 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2691 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2692 | else { |
d8eceb89 | 2693 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2694 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2695 | } |
79072805 LW |
2696 | #endif |
2697 | #endif | |
85e6fe83 | 2698 | #endif |
d8eceb89 | 2699 | PL_gid = PerlProc_getgid(); |
79072805 LW |
2700 | break; |
2701 | case ')': | |
5cd24f17 | 2702 | #ifdef HAS_SETGROUPS |
2703 | { | |
b83604b4 | 2704 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2705 | Groups_t *gary = NULL; |
fb4089e0 | 2706 | #ifdef _SC_NGROUPS_MAX |
2707 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2708 | ||
2709 | if (maxgrp < 0) | |
2710 | maxgrp = NGROUPS; | |
2711 | #else | |
2712 | int maxgrp = NGROUPS; | |
2713 | #endif | |
757f63d8 SP |
2714 | |
2715 | while (isSPACE(*p)) | |
2716 | ++p; | |
2717 | PL_egid = Atol(p); | |
fb4089e0 | 2718 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2719 | while (*p && !isSPACE(*p)) |
2720 | ++p; | |
2721 | while (isSPACE(*p)) | |
2722 | ++p; | |
2723 | if (!*p) | |
2724 | break; | |
2725 | if(!gary) | |
2726 | Newx(gary, i + 1, Groups_t); | |
2727 | else | |
2728 | Renew(gary, i + 1, Groups_t); | |
2729 | gary[i] = Atol(p); | |
2730 | } | |
2731 | if (i) | |
2732 | (void)setgroups(i, gary); | |
f5a63d97 | 2733 | Safefree(gary); |
5cd24f17 | 2734 | } |
2735 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2736 | PL_egid = SvIV(sv); |
5cd24f17 | 2737 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2738 | if (PL_delaymagic) { |
2739 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2740 | break; /* don't do magic till later */ |
2741 | } | |
2742 | #ifdef HAS_SETEGID | |
3280af22 | 2743 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2744 | #else |
2745 | #ifdef HAS_SETREGID | |
b28d0864 | 2746 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2747 | #else |
2748 | #ifdef HAS_SETRESGID | |
b28d0864 | 2749 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2750 | #else |
b28d0864 NIS |
2751 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2752 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2753 | else { |
d8eceb89 | 2754 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2755 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2756 | } |
79072805 LW |
2757 | #endif |
2758 | #endif | |
85e6fe83 | 2759 | #endif |
d8eceb89 | 2760 | PL_egid = PerlProc_getegid(); |
79072805 LW |
2761 | break; |
2762 | case ':': | |
2d8e6c8d | 2763 | PL_chopset = SvPV_force(sv,len); |
79072805 LW |
2764 | break; |
2765 | case '0': | |
e2975953 | 2766 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2767 | #ifdef HAS_SETPROCTITLE |
2768 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2769 | * show a string from the process struct and provide | |
2770 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2771 | if (PL_origalen != 1) { |
b83604b4 | 2772 | s = SvPV_const(sv, len); |
98b76f99 | 2773 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2774 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2775 | * but not the "(perl) suffix from the ps(1) |
2776 | * output, because that's what ps(1) shows if the | |
2777 | * argv[] is modified. */ | |
6f2ad931 | 2778 | setproctitle("-%s", s); |
9aad2c0e | 2779 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2780 | /* This doesn't really work if you assume that |
2781 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2782 | * because in ps(1) output the result will be like | |
2783 | * sprintf("perl: %s (perl)", s) | |
2784 | * I guess this is a security feature: | |
2785 | * one (a user process) cannot get rid of the original name. | |
2786 | * --jhi */ | |
2787 | setproctitle("%s", s); | |
2788 | # endif | |
2789 | } | |
9d3968b2 | 2790 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2791 | if (PL_origalen != 1) { |
17aa7f3d | 2792 | union pstun un; |
b83604b4 | 2793 | s = SvPV_const(sv, len); |
6867be6d | 2794 | un.pst_command = (char *)s; |
17aa7f3d JH |
2795 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2796 | } | |
9d3968b2 | 2797 | #else |
2d2af554 GA |
2798 | if (PL_origalen > 1) { |
2799 | /* PL_origalen is set in perl_parse(). */ | |
2800 | s = SvPV_force(sv,len); | |
2801 | if (len >= (STRLEN)PL_origalen-1) { | |
2802 | /* Longer than original, will be truncated. We assume that | |
2803 | * PL_origalen bytes are available. */ | |
2804 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2805 | } | |
2806 | else { | |
2807 | /* Shorter than original, will be padded. */ | |
235ac35d | 2808 | #ifdef PERL_DARWIN |
60777a0d JH |
2809 | /* Special case for Mac OS X: see [perl #38868] */ |
2810 | const int pad = 0; | |
235ac35d | 2811 | #else |
8a89a4f1 MB |
2812 | /* Is the space counterintuitive? Yes. |
2813 | * (You were expecting \0?) | |
2814 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2815 | * --jhi */ | |
60777a0d | 2816 | const int pad = ' '; |
235ac35d | 2817 | #endif |
60777a0d JH |
2818 | Copy(s, PL_origargv[0], len, char); |
2819 | PL_origargv[0][len] = 0; | |
2820 | memset(PL_origargv[0] + len + 1, | |
2821 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2822 | } |
2823 | PL_origargv[0][PL_origalen-1] = 0; | |
2824 | for (i = 1; i < PL_origargc; i++) | |
2825 | PL_origargv[i] = 0; | |
79072805 | 2826 | } |
9d3968b2 | 2827 | #endif |
e2975953 | 2828 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
2829 | break; |
2830 | } | |
2831 | return 0; | |
2832 | } | |
2833 | ||
2834 | I32 | |
35a4481c | 2835 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2836 | { |
aadb217d | 2837 | register char* const* sigv; |
7918f24d NC |
2838 | |
2839 | PERL_ARGS_ASSERT_WHICHSIG; | |
96a5add6 | 2840 | PERL_UNUSED_CONTEXT; |
79072805 | 2841 | |
aadb217d | 2842 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2843 | if (strEQ(sig,*sigv)) |
aadb217d | 2844 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2845 | #ifdef SIGCLD |
2846 | if (strEQ(sig,"CHLD")) | |
2847 | return SIGCLD; | |
2848 | #endif | |
2849 | #ifdef SIGCHLD | |
2850 | if (strEQ(sig,"CLD")) | |
2851 | return SIGCHLD; | |
2852 | #endif | |
7f1236c0 | 2853 | return -1; |
79072805 LW |
2854 | } |
2855 | ||
ecfc5424 | 2856 | Signal_t |
1e82f5a6 | 2857 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 2858 | Perl_sighandler(int sig, siginfo_t *sip, void *uap PERL_UNUSED_DECL) |
1e82f5a6 SH |
2859 | #else |
2860 | Perl_sighandler(int sig) | |
2861 | #endif | |
79072805 | 2862 | { |
1018e26f NIS |
2863 | #ifdef PERL_GET_SIG_CONTEXT |
2864 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2865 | #else |
cea2e8a9 | 2866 | dTHX; |
71d280e3 | 2867 | #endif |
79072805 | 2868 | dSP; |
a0714e2c SS |
2869 | GV *gv = NULL; |
2870 | SV *sv = NULL; | |
8772537c | 2871 | SV * const tSv = PL_Sv; |
601f1833 | 2872 | CV *cv = NULL; |
533c011a | 2873 | OP *myop = PL_op; |
84902520 | 2874 | U32 flags = 0; |
8772537c | 2875 | XPV * const tXpv = PL_Xpv; |
71d280e3 | 2876 | |
3280af22 | 2877 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2878 | flags |= 1; |
3280af22 | 2879 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2880 | flags |= 4; |
3280af22 | 2881 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2882 | flags |= 16; |
2883 | ||
727405f8 | 2884 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2885 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2886 | PL_sig_name[sig]); |
2887 | exit(sig); | |
2888 | } | |
ff0cee69 | 2889 | |
84902520 TB |
2890 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2891 | infinity, so we fix 4 (in fact 5): */ | |
2892 | if (flags & 1) { | |
3280af22 | 2893 | PL_savestack_ix += 5; /* Protect save in progress. */ |
8772537c | 2894 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags); |
84902520 | 2895 | } |
ac27b0f5 | 2896 | if (flags & 4) |
3280af22 | 2897 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2898 | if (flags & 16) |
3280af22 | 2899 | PL_scopestack_ix += 1; |
84902520 | 2900 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 2901 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
2902 | || SvTYPE(cv) != SVt_PVCV) { |
2903 | HV *st; | |
f2c0649b | 2904 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 2905 | } |
84902520 | 2906 | |
a0d0e21e | 2907 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
2908 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
2909 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
2910 | : ((cv && CvGV(cv)) | |
2911 | ? GvENAME(CvGV(cv)) | |
2912 | : "__ANON__"))); | |
00d579c5 | 2913 | goto cleanup; |
79072805 LW |
2914 | } |
2915 | ||
22c35a8c | 2916 | if(PL_psig_name[sig]) { |
b37c2d43 | 2917 | sv = SvREFCNT_inc_NN(PL_psig_name[sig]); |
84902520 | 2918 | flags |= 64; |
df3728a2 | 2919 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 | 2920 | PL_sig_sv = sv; |
df3728a2 | 2921 | #endif |
84902520 | 2922 | } else { |
ff0cee69 | 2923 | sv = sv_newmortal(); |
22c35a8c | 2924 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2925 | } |
e336de0d | 2926 | |
e788e7d3 | 2927 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2928 | PUSHMARK(SP); |
79072805 | 2929 | PUSHs(sv); |
8aad04aa JH |
2930 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
2931 | { | |
2932 | struct sigaction oact; | |
2933 | ||
2934 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
2935 | if (sip) { |
2936 | HV *sih = newHV(); | |
ad64d0ec | 2937 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
2938 | /* The siginfo fields signo, code, errno, pid, uid, |
2939 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
2940 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
2941 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 2942 | #if 0 /* XXX TODO: Configure scan for the existence of these, but even that does not help if the SA_SIGINFO is not implemented according to the spec. */ |
85771703 NC |
2943 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
2944 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
2945 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
2946 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
2947 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
2948 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 2949 | #endif |
8aad04aa | 2950 | EXTEND(SP, 2); |
ad64d0ec | 2951 | PUSHs(rv); |
22f1178f | 2952 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 2953 | } |
b4552a27 | 2954 | |
8aad04aa JH |
2955 | } |
2956 | } | |
2957 | #endif | |
79072805 | 2958 | PUTBACK; |
a0d0e21e | 2959 | |
ad64d0ec | 2960 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 2961 | |
d3acc0f7 | 2962 | POPSTACK; |
1b266415 | 2963 | if (SvTRUE(ERRSV)) { |
1d615522 | 2964 | #ifndef PERL_MICRO |
983dbef6 | 2965 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2966 | /* Handler "died", for example to get out of a restart-able read(). |
2967 | * Before we re-do that on its behalf re-enable the signal which was | |
2968 | * blocked by the system when we entered. | |
2969 | */ | |
2970 | sigset_t set; | |
2971 | sigemptyset(&set); | |
2972 | sigaddset(&set,sig); | |
2973 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2974 | #else | |
2975 | /* Not clear if this will work */ | |
2976 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2977 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2978 | #endif |
1d615522 | 2979 | #endif /* !PERL_MICRO */ |
bd61b366 | 2980 | Perl_die(aTHX_ NULL); |
1b266415 | 2981 | } |
00d579c5 | 2982 | cleanup: |
84902520 | 2983 | if (flags & 1) |
3280af22 | 2984 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2985 | if (flags & 4) |
3280af22 | 2986 | PL_markstack_ptr--; |
84902520 | 2987 | if (flags & 16) |
3280af22 | 2988 | PL_scopestack_ix -= 1; |
84902520 TB |
2989 | if (flags & 64) |
2990 | SvREFCNT_dec(sv); | |
533c011a | 2991 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2992 | |
3280af22 NIS |
2993 | PL_Sv = tSv; /* Restore global temporaries. */ |
2994 | PL_Xpv = tXpv; | |
53bb94e2 | 2995 | return; |
79072805 | 2996 | } |
4e35701f NIS |
2997 | |
2998 | ||
51371543 | 2999 | static void |
8772537c | 3000 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3001 | { |
97aff369 | 3002 | dVAR; |
8772537c AL |
3003 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3004 | SV* const sv = mgs->mgs_sv; | |
51371543 GS |
3005 | |
3006 | if (!sv) | |
3007 | return; | |
3008 | ||
3009 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
3010 | { | |
f8c7b90f | 3011 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3012 | /* While magic was saved (and off) sv_setsv may well have seen |
3013 | this SV as a prime candidate for COW. */ | |
3014 | if (SvIsCOW(sv)) | |
e424a81e | 3015 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
3016 | #endif |
3017 | ||
f9c6fee5 CS |
3018 | if (mgs->mgs_readonly) |
3019 | SvREADONLY_on(sv); | |
3020 | if (mgs->mgs_magical) | |
3021 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3022 | else |
3023 | mg_magical(sv); | |
2b77b520 YST |
3024 | if (SvGMAGICAL(sv)) { |
3025 | /* downgrade public flags to private, | |
3026 | and discard any other private flags */ | |
3027 | ||
10edeb5d JH |
3028 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
3029 | if (pubflags) { | |
3030 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
3031 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
3032 | } |
3033 | } | |
51371543 GS |
3034 | } |
3035 | ||
3036 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
3037 | ||
3038 | /* If we're still on top of the stack, pop us off. (That condition | |
3039 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3040 | * if it's being called via leave_scope.) | |
3041 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3042 | * may leave alloc gunk on the savestack, and some code | |
3043 | * (e.g. sighandler) doesn't expect that... | |
3044 | */ | |
3045 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3046 | { | |
3047 | I32 popval = SSPOPINT; | |
c76ac1ee | 3048 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
3049 | PL_savestack_ix -= 2; |
3050 | popval = SSPOPINT; | |
3051 | assert(popval == SAVEt_ALLOC); | |
3052 | popval = SSPOPINT; | |
3053 | PL_savestack_ix -= popval; | |
3054 | } | |
3055 | ||
3056 | } | |
3057 | ||
3058 | static void | |
8772537c | 3059 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3060 | { |
27da23d5 | 3061 | dVAR; |
e1ec3a88 | 3062 | const U32 flags = *(const U32*)p; |
51371543 | 3063 | |
7918f24d NC |
3064 | PERL_ARGS_ASSERT_UNWIND_HANDLER_STACK; |
3065 | ||
51371543 GS |
3066 | if (flags & 1) |
3067 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
df3728a2 | 3068 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 | 3069 | if (flags & 64) |
27da23d5 | 3070 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 | 3071 | #endif |
51371543 | 3072 | } |
1018e26f | 3073 | |
66610fdd | 3074 | /* |
b3ca2e83 NC |
3075 | =for apidoc magic_sethint |
3076 | ||
3077 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3078 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3079 | anything that would need a deep copy. Maybe we should warn if we find a | |
3080 | reference. | |
b3ca2e83 NC |
3081 | |
3082 | =cut | |
3083 | */ | |
3084 | int | |
3085 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3086 | { | |
3087 | dVAR; | |
ad64d0ec | 3088 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3089 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3090 | |
7918f24d NC |
3091 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3092 | ||
e6e3e454 NC |
3093 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3094 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3095 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3096 | or take other more complex action. */ | |
3097 | ||
5b9c0671 NC |
3098 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3099 | Doing this here saves a lot of doing it manually in perl code (and | |
3100 | forgetting to do it, and consequent subtle errors. */ | |
3101 | PL_hints |= HINT_LOCALIZE_HH; | |
c28fe1ec | 3102 | PL_compiling.cop_hints_hash |
fc92a12d | 3103 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, key, sv); |
b3ca2e83 NC |
3104 | return 0; |
3105 | } | |
3106 | ||
3107 | /* | |
f175cff5 | 3108 | =for apidoc magic_clearhint |
b3ca2e83 | 3109 | |
c28fe1ec NC |
3110 | Triggered by a delete from %^H, records the key to |
3111 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3112 | |
3113 | =cut | |
3114 | */ | |
3115 | int | |
3116 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3117 | { | |
3118 | dVAR; | |
7918f24d NC |
3119 | |
3120 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3121 | PERL_UNUSED_ARG(sv); |
3122 | ||
b3ca2e83 NC |
3123 | assert(mg->mg_len == HEf_SVKEY); |
3124 | ||
b3f24c00 MHM |
3125 | PERL_UNUSED_ARG(sv); |
3126 | ||
5b9c0671 | 3127 | PL_hints |= HINT_LOCALIZE_HH; |
c28fe1ec NC |
3128 | PL_compiling.cop_hints_hash |
3129 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
ad64d0ec | 3130 | MUTABLE_SV(mg->mg_ptr), &PL_sv_placeholder); |
b3ca2e83 NC |
3131 | return 0; |
3132 | } | |
3133 | ||
3134 | /* | |
f747ebd6 Z |
3135 | =for apidoc magic_clearhints |
3136 | ||
3137 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3138 | ||
3139 | =cut | |
3140 | */ | |
3141 | int | |
3142 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3143 | { | |
3144 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3145 | PERL_UNUSED_ARG(sv); | |
3146 | PERL_UNUSED_ARG(mg); | |
3147 | if (PL_compiling.cop_hints_hash) { | |
3148 | Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash); | |
3149 | PL_compiling.cop_hints_hash = NULL; | |
3150 | } | |
3151 | return 0; | |
3152 | } | |
3153 | ||
3154 | /* | |
66610fdd RGS |
3155 | * Local variables: |
3156 | * c-indentation-style: bsd | |
3157 | * c-basic-offset: 4 | |
3158 | * indent-tabs-mode: t | |
3159 | * End: | |
3160 | * | |
37442d52 RGS |
3161 | * ex: set ts=8 sts=4 sw=4 noet: |
3162 | */ |